Greenland

World's largest island that's not a continent

Caspian Sea

World's largest lake, though geologists say it's technically an ocean and linguists say it's a sea

Kilimanjaro

Highest mountain in Africa

Denali

Highest mountain in N. America

Aconcagua

Highest mountain in S. America

Lake Superior

The single US great lake that is the largest true (geologically) freshwater lake in the world

Lake Victoria

Second-largest freshwater lake in the world

Lake Baikal

Deepest lake in the world

Lake Baikal

Largest by volume freshwater lake in the world

Lake Baikal

Largest lake sharing shoreline with a single country

Lake Tanganyika

Longest lake in Africa; second-largest lake in Africa

Lake Victoria

Largest lake in Africa

Lake Baikal

Arguably the world's oldest lake

Lake Erie

Shallowest of the Great Lakes

Lake Michigan-Huron

These two Great Lakes are actually connected, making them the largest lake in the world, technically

Lake Ontario

Smallest Great Lake

Mt Elbrus

Highest mountain in Europe

Ladoga (Russia)

Largest lake in Europe

Lake Titicaca

Largest true lake in S. America

Lake Vostok

Largest sub-glacial lake

Antarctica

Largest sub-glacial lake is under this continent

Neva River

River flowing through St. Petersburg and draining the largest lake in Europe

Great Salt Lake

Largest lake entirely in one US state

Lake Baikal

Largest lake in Asia

Lake Maracaibo

Largest "lake" in S. America (actually a bay)

Lake Titicaca

Highest commercially-navigable lake in the world

Aral Sea

Lake that disappeared; was 4th largest in world in 1960, now mostly dried up and 2-5% original size

Great Barrier Reef

World's largest coral reef

Australia

Flattest continent

Antarctica

Windiest continent

Antarctica

Driest continent

Australia

Driest inhabited continent

Nullarbor Plain

World's largest single piece of limestone (1100 km)

Mauna Kea

Tallest mountain on earth from base to top, includes some underwater

Mars

Olympus, tallest mountain on a planet other than earth, is on this planet

Mont Blanc

Highest mountain in Western Europe

Nile

Longest river in world

Amazon

Largest river in world by volume

Vinson Massif

Highest mountain in Antarctica

Mt. Kosciuszko

Highest mountain in Australia

Carstensz Pyramid (Puncak Jaya)

Highest mountain in Oceania

New Guinea

Highest mountain in Oceania on this island

Argentina

Mt. Aconcagua in this country

Indonesia

Carstensz Pyramid in this country

China, Nepal

Mt. Everest in these two countries

Mt Etna

Tallest volcano in western Europe

Libya

Country where highest temp ever recorded (1922)

Russia

Country outside Antarctica where lowest temp ever recorded

Dead Sea

Lowest land location on earth

Death Valley

Hottest temp in USA recorded here (second highest temp ever recorded on Earth)

Ethiopia

country with hottest average place on earth

South Africa

Deepest mine in the world in this country

Challenger Deep, Mariana Trench

Deepest point in the world's oceans

Hawaii

largest island in the USA

Kilauea

Most active volcano on Hawaii

Mauna Loa

Largest volcano on earth (in volume and area covered)

Kilauea

Longest volcanic eruption in past 200 years--erupting since 1983

Kilauea

Most touristed volcano in the world

Kilauea

USGS considers it the most dangerous volcano in the US

Mt. Rainier

Highest peak in contiguous 48 US states

Washington State

State with highest peak in contiguous 48 states

Mt. Rainier

Most glaciated peak in the lower 48

Ganges

Highest-volume river in Asia

Congo

Highest-volume river in Africa

Volga

Highest-volume river in Europe

Mississippi

Highest-volume river in N. America

Sepik

Highest-volume river in Australasia

New Guinea

Highest-volume river in Australasia on this island

Amazon

Longest river in S. America

Yangtze

Longest river in Asia

Mississippi

Longest river in N. America

Murray

Longest river in Australasia

Volga

Longest river in Europe

Danube

Longest river in Western Europe

Danube

Highest volume river in Western Europe

East China Sea

Yangtze flows into this body of water

Bay of Bengal

Ganges flows into this body of water

Caspian Sea

Volga flows into this body of water

New Guinea

Second-largest island in the world; largest island in Australasia

Madagascar

Largest African island

Honshu, Japan

Largest Asian island

Britain

Largest European island

Indonesia

Largest (by area) archipelago in the world

Finland

Country with largest (by number) archipelago in world

Easter Island

remotest inhabited island in the world

Reykjavik

World's most northerly capital

Wellington

World's most southerly capital

France

Largest country in Western Europe

Canada

Country with the longest coastline of any country in the world

Gambia

Smallest country on African mainland

Maldives

Asia's smallest country

Vatican City

Europe's smallest country

New York City

City that hosts the world's largest marathon

Algeria

Largest country in Africa now that Sudan has split

Nauru

World's smallest independent republic

Monaco

World's smallest principality

Vatican City

World's smallest sovereign state

Tuvalu

World's second smallest republic, negotiated large royalties in 2000 for leasing its internet domain .tv

Atacama

World's driest desert

Sahara

World's largest desert (other than Antarctica)

Arabian

Second-largest desert in world, largest desert in Asia

Gobi

Largest desert in China

Kalahari

Largest desert in sub-Saharan Africa (hot desert)

Patagonian

Largest desert in S. America (though not driest, a cold-winter desert)

Great Victoria

Largest desert in Australia

Great Basin (Nevada, some of Utah, Oregon, CA)

Largest desert in N. America (a cold-winter desert)

Namib

Oldest desert in the world

Antarctica

Continent with the highest average elevation

Erebus

World's southern-most active volcano

Empty Quarter

World's largest unbroken expanse of sand

Ayers Rock (Uluru)

World's largest monolith

Chihuahuan

Largest sub-tropical desert in N. America

Namib

Cool coastal desert in southern Africa, very dry

Sonoran

Desert in N. America where saguaro cactus grows

Simpson (Australia)

Desert with longest sand dunes in the world

Serbia

"Paleo-desert" in Europe called the Deliblato Sands, in this country

Spain

True desert where spaghetti westerns filmed in Europe

Poland

European paleo-desert where German troops practiced desert warfare in WWII, the Bedlow Sands, in this country

Nebraska

Paleo-desert in USA called the Sand Hills, in this state

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