Geography Guides
Ranked tours through world geography — the biggest, smallest, deepest, and most populous, each built from the data on every entry.
The Most Populous Countries in the World
The world's nations, ranked by population.
The Largest Countries by Area
The world's biggest nations, by total area.
The Smallest Countries in the World
The world's tiniest sovereign states, by area.
The Most Populous Cities in the World
The great urban centers, by metro population.
The Largest Continents
Earth's continents, ranked by area.
The Highest Mountains in the World
The planet's loftiest peaks, by elevation.
The Longest Mountain Ranges in the World
The great mountain chains, by length.
The Highest Volcanoes in the World
The tallest volcanoes, by summit elevation.
The Largest Deserts in the World
The great arid expanses, by area.
The Largest Islands in the World
The biggest islands, by land area.
The Longest Rivers in the World
The world's great rivers, by length.
The Largest Lakes in the World
The world's largest lakes, by surface area.
The Deepest Lakes in the World
The world's deepest lakes, by maximum depth.
The Largest Seas and Gulfs in the World
The world's seas and gulfs, by area.
The Deepest Oceans
Earth's oceans, ranked by maximum depth.
The Highest Waterfalls in the World
The world's tallest waterfalls, by height.