Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

Since the 1700s, this old barrel has acted as a post box that relies on the kindness of travelers.

Home of the "true" equator.

A turquoise lake within a volcanic crater.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

Ecuador's largest Incan ruins show evidence of sophisticated irrigation and diplomacy among the ancient builders.

Neo-cave art on the macro scale.

An old slave lookout in Cuba's historic sugar cane fields.

This imposing memorial contains the remains of Che Guevara — and 29 other guerrillas who died with him in Bolivia.

In terms of history and architecture, this is one of the most remarkable cemeteries in the world.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

After the Cuban Revolution, the famous rum company had to leave their swanky headquarters behind.

No one knows the meaning behind this giant sculpture of a nude woman with a fork riding a rooster in Havana.

Four antique Baldwin trains are kept on display in the Mal Tiempo train depot.

Single runway interrupted by a busy road that cuts across its middle.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

The fairy tale castle of the "fairy-tale king."

Remnants of an exploded schooner and wrecked submarines form a breakwater.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Tiny memorials honor individual victims of the Holocaust.

A restaurant and observation deck built in a unique broadcasting antenna.

A fascinating insight into daily life in the Eastern Bloc.