1. Greece
   Germany
2. Gibraltar
   Genoa

Greece's unofficial name comes from the Latin word "Graecia," which means "home of the Greeks." Greece is considered to be the cradle of Western civilization, the Olympic games, democracy and many other scientific and humanities disciplines that still we use today.

1. Greenwich
   Gatwick
2. Goole
   Grantham

The prime meridian is where the longitude is at 0 degrees, dividing Earth into two hemispheres, Eastern and Western. It was established at the Royal Observatory in the late 19th century. This is also where we get Greenwich Mean Time, so time zones are added or subtracted from it (e.g., Eastern Standard Time in the U.S. is GMT-5, meaning five hours behind).

1. Equatorial Guinea
   Ghana
2. Guinea-Bissau
   Guinea-Conakry

Also known as Guinea, Guinea-Conakry gained independence from France in 1958, choosing not to be a part of the French Community--a loose association of former French colonies. Since gaining independence, Guinea-Conakry has struggled with political unrest, poverty and disease outbreaks with HIV/AIDS and the Ebola virus.

1. Gyeonggi
   Gangnam
2. Gyeongju
   Goguryeo

The affluent Gangnam District in Seoul is considered to be comparable to Beverly Hills, California. It was also the name of the 2012 song, "Gangnam Style" by K-pop star Psy, which has over 3 billion views.

1. Greenock
   Guernsey
2. Greytown
   Greenfield

Guernsey is a part of the chain of islands called the Channel Islands. Guernsey is not a part of the European Union (although it does have a trading relationship with the EU) nor is it a part of the United Kingdom, but it does defer to the British government for international issues.

1. Gabriola Island
   Galt Island
2. Governors Island
   Garden Island

Governors Island used to be a U.S. Coast Guard outpost and historically was used in the American Revolutionary War as a defensive outpost. Now part of the island has a national park and is a tourist destination, with recreational spaces open during the months of May through September.

1. Grizzly Peak
   Grouse Mountain
2. Gaviota Peak
   Grand Teton

The Grand Teton is a part of Grand Teton National Park in Northwest Wyoming. It's the highest peak in the Teton Range and the second-highest peak in Wyoming.

1. Genoa
   Guatemala
2. Guyana
   Grenada

Before Guatemala was a country, it was the core of the ancient Mayan civilization. Guatemala has mountains, deserts and a Pacific coastline. The country also has rich biodiversity, with wetlands, mangrove forests and unique fauna.

1. Greenland
   Galiano
2. Grande Comore
   Gruney

Although Greenland ethnically and geographically has more connections to the Arctic region, it is considered to be a Nordic nation. Greenland is an independent, self-governing country and a part of the Kingdom of Denmark. The population is just about 56,000 people on 836,330 square miles of land.

1. Guinea-Bissau
   Equatorial Guinea
2. Guinea-Conakry
   Gabon

Guinea-Bissau has experienced a lot of political instability since its declaration of independence, which preceded the overthrowing of the Estado Novo fascist regime of Portugal in the following year. Portuguese is the official language, but less than 16 percent of the population speaks it. A large of portion of the population speaks a Portuguese creole.

1. Great Britain
   Germany
2. Georgia
   Guatemala

The country of Georgia was formerly a part of the U.S.S.R. until 1991, although Russia has claim to two Georgian territories which have declared independence, Abkhazia and South Ossetia. It's been an ongoing issue of strife since the ceasefire in 2008.

1. Ghaziabad
   Goa
2. Guwahati
   Guntur

The state of Goa is home to about 1.5 million residents. This tiny state is known for its places of worship and beaches, and is a destination for those who want to party on a budget. Goa was a part of Portuguese India until it was annexed by India in 1961, so it has an intriguing mix of Western and Eastern cultural influences.

1. Guinea-Bissau
   Gabon
2. Guyana
   Ghana

Formerly called Gold Coast and a former British colony, Ghana was the first African nation to gain independence in 1957. Ghana's name hearkens back to the Empire of Ghana in now parts of Senegal, Mali and Mauritania. The empire ruled those regions from the 8th to 13th centuries.

1. Guyana
   Grenada
2. Guam
   Goa

Grenada consists of one main island and six smaller islands situated north of the main island. It was first spotted by Christopher Columbus in 1498. Grenada has the nickname of "Island of Spice" because it is a large exporter of the spices nutmeg and mace.

1. Genoa
   Govan
2. Guam
   Graveley

The Chamorro people were the first inhabitants of the island. Ferdinand Magellan was the first European to visit the island in 1521. Now, Guam has several U.S. military outposts on the island.

1. Guadeloupe
   Guatemala
2. Galgate
   Guadalupe Island

Guadeloupe has two main islands: Basse-Terre and Grande-Terre. This overseas region of France is also a territory of the European Union, so the Euro is the official currency.

1. Guinea-Bissau
   Guadeloupe
2. Ghana
   Gabon

The Gabonese Republic, better known as Gabon, was formerly a French colony and declared independence in 1960. Sitting on the west coast of Central Africa, Gabon has three geographical regions--the western coastal plains, the northern mountains and the eastern savannas.

1. Gosforth
   Gaddesby
2. Glasgow
   Glastonbury

Historically, around the time of the Industrial Revolution, Glasgow, Scotland was known for its innovations in manufacturing and shipbuilding. The River Clyde runs through this city of over 600,000 people. Glasgow is the largest shipping port of Scotland.

1. Glasthule
   Glenageary
2. Greystones
   Galway

Galway is considered to be the cultural heart of Ireland. If you want to hear and see people playing and dancing to traditional Irish music, Galway is the place to be.

1. Ghana
   French Guiana
2. Guyana
   Goa

Guyana may be a part of the continent of South America, but because it's located on the northern part of the continent, it's culturally considered to be a part of the Caribbean. This country gained its independence from Britain in 1966 and has a diverse culture influenced by West Indian, Indian and African cultures.

1. Greece
   Gibraltar
2. Germany
   Great Britain

After World War II in 1945, Germany was divided into two parts through the city of Berlin, with East Germany as part of the Eastern Bloc of communist countries, and West Germany being a part of the Western Bloc. Reunification happened after a series of events and protests, culminating with the tearing down of the Berlin Wall in late 1989.

1. Gulf Islands
   Grand Cayman
2. Grand-Terre
   Green Island

Grand Cayman is a part of the Cayman Islands, which are a part of the Greater Antilles. George Town is the capital of the Cayman Islands and is located on Grand Cayman. This territory is popular for parking one's money and business revenue offshore.

1. Gibraltar
   Grenada
2. Guyana
   Ghana

Since the 18th century, this tip of the Iberian Peninsula has been a part of the United Kingdom, but in 2006, although it is still a British overseas territory, Gibraltar became a self-governing entity. Spain still wants the UK to give the territory back, but Gibraltarians have voted against this in twice, with the latest referendum in 2002. The Strait of Gibraltar is only about eight miles wide, and half of the world's trade by sea passes through there.

1. Gabon
   Guinea-Conakry
2. Ghana
   The Gambia

The Gambia, also known as The Republic of the Gambia, is the smallest country on the continent of Africa, mainly surrounded by the country of Senegal except for the Atlantic Ocean. The Gambia River was integral to the transatlantic slave trade, and this country was first a colony of Portugal and then the United Kingdom for those reasons. The Gambia gained independence from the UK in 1965.

1. Gloucester
   Grays
2. Gatwick
   Glastonbury

The Glastonbury Festival has been around off and on since the early 20th century, but has become a destination music festival for people and musical artists from around the world. Glastonbury is also known to draw people with New Age beliefs. The town is also the source of many myths and legends including ones around King Arthur and the Holy Grail.

1. Greater Antilles
   Guernsey
2. Gulf Islands
   Gunnison

The Gulf Islands are situated in the Strait of Georgia (which is also known as the Gulf of Georgia or the Salish Sea). There are two sets of islands, the Northern Gulf Islands and the Southern Gulf Islands. Some of the islands have more of a Mediterranean climate, so olive trees and the rare Garry oak tree can grow on a few of the islands.

1. Superior
   Huron
2. Ontario
   St. Clair

The Great Lakes are the largest freshwater lakes in the world. Here's a great mnemonic device to remember the five Great Lakes, located in northern U.S. and southern Canada--HOMES: Huron, Ontario, Michigan, Erie and Superior. And technically, Huron and Michigan are one lake.

1. Geneva
   Glasgow
2. Genoa
   Gdansk

Geneva, Switzerland has a lot of international importance. It headquarters many international organizations, including the birthplace of the Red Cross. Geneva is the place where the Geneva Conventions were signed and is an important global financial center.

1. Gujarat
   Goa
2. Gangtok
   Guwahati

Derived from Sanskrit, Gujarati is the main language of the state of Gujarat. Gujarat is also the state that Indian activist Mahatma Gandhi is from. Where this state is situated, jutting out into the Arabian Sea, Gujarat has been known for centuries to trade and travel to neighboring regions such as the Middle East, Persian Gulf and Indonesia.

1. Great Lakes
   Grand Teton
2. Great Plains
   Grand Canyon

Technically, the Great Plains is more of an American term than a Canadian one. In Canada, this section of the country is called the Prairies. A lot of this area has been converted to pastureland, agriculture and for harnessing wind power.

1. Giugliano
   Grosseto
2. Gela
   Genoa

Regarding Genoa's flag, England (and the city of London) used to pay Genoa to use its flag (known to the English as St. George's Cross) in the 12th century as protection for their ships in the Mediterranean. Today, Genoa is Italy's busiest port and home to 1.5 million people in its metropolitan area. Genoa is also the birthplace of many famous Italians, including explorer Christopher Columbus.

1. It is 277 miles long.
   The first known European to have seen it was García López de Cárdenas in 1540.
2. It is the deepest canyon in the world.
   It is one of the Seven Natural Wonders of the world.

Although the Grand Canyon, located in Arizona, is pretty deep at 6,093 feet (over a mile!), the deepest gorge in the world measures a depth of 17,567 feet, Yarlung Tsangpo Grand Canyon in Tibet. And there are people who live in the Grand Canyon--Supai Village, which is located in the Havasupai Indian Reservation. As you can imagine, that is a pretty remote town, and it's actually the most remote town in the lower 48.

1. Grand Prairie
   Galveston
2. Grandview
   Grapeland

Galveston Island is a part of Galveston, Texas, which faces the Gulf of Mexico. Because Galveston is a touristy town, there's a distinction between tourists and non-tourists. You're either born on the island (BOI) or an islander by choice (IBC).

1. Galápagos Islands
   Gulf Islands
2. Grand Cayman
   Islands of Gdansk

The Galápagos Islands is made up of 18 main islands (including one named after Darwin) and are a part of the country of Ecuador. Close to 98 percent of the islands have become a national park. There are more introduced species than there are native ones on the islands, and development along with tourism continue to threaten the islands' wildlife.

1. England
   Scotland
2. Northern Ireland
   Wales

Great Britain is often used interchangeably for the United Kingdom. But geographically, Great Britain refers to the island. It's the ninth largest island and it's the third most populous island with about 61 million residents.