Lake Victoria in Africa is the largest tropical lake — and the source of the White Nile.

The Sahara Desert was once home to large lakes and grasslands.

Fact #232 · Geography

The Pacific Ring of Fire contains many of the world's active volcanoes.

Fact #157 · Geography

The Colosseum in Rome was completed in the first century.

Fact #139 · Geography

The first forests appeared during the Devonian period.

Fact #710 · Geography

The Channel Tunnel links the United Kingdom and France beneath the English Channel.

Fact #1506 · Geography

The Petronas Towers were once the tallest buildings in the world.

Fact #1523 · Geography

The Pacific Ocean borders more countries than any other ocean.

Fact #238 · Geography

The Sahara Desert is expanding southward at a rate of about 48 kilometers per year due to desertification.

Fact #4258 · Geography