Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

Bangkok celebrated its shifting monarchy with a militaristic homage to democracy.

A preposterously luxurious hotel with gold-plated iPads, Rolls Royce chauffeurs, and a staff that trains by watching "Downton Abbey."

Come for the flowers, stay for the bats!

A striking symbol of the Bulgarian capital.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Roughly 17 million letters to Santa have found their way to this Arctic Circle post office.

Sweden's "good old days" painstakingly re-created in a model village.

Climb to the top of the world's largest seated bronze Buddha.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Home to three historic ships from the age of Vikings.

Not only does this shop sell mokorotlo, the traditional hat of Lesotho, the building is shaped like one.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

The silly symbol for an underground protest group is now scattered around the city.

A semi-scholarly approach to sex.

Nelson Mandela lived here with his family from 1946 until his arrest in 1962.

Two giant painted cooling towers make for one of the world’s most epic bungee jumps.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.