Iceland has virtually no trees — Viking settlers cleared them for fuel and farmland, leaving barren land.

The Ganges Delta is the world's largest river delta, covering over 100,000 square kilometers.

The London Underground is one of the oldest metro systems in the world.

Iceland sits directly on the Mid-Atlantic Ridge and is actually spreading by 2.5 cm per year as two tectonic plates diverge.

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

The border between Belgium and the Netherlands runs through a bar in the town of Baarle-Hertog.

More people live in Tokyo than in the entire country of Canada.

Russia spans 11 time zones — more than any other country.

Sudan has more pyramids than any country in the world.