An ancient stone fortress considered by many to be the eighth wonder of the world.

This ancient cave temple complex is the largest and best-preserved temple complex in Sri Lanka.

This massive Brazilian church is built like an angular, technicolor pyramid left by Mayans from the future.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

This striking, two-toned confluence of rivers is visible from space.

A beautiful opera house in the heart of Amazonia has recently restarted performances after a 90-year hiatus.