Mineral springs believed to hold therapeutic properties draw in visitors from all over.

A toxic lake near a volcanic caldera that is home to flamingos and other life.

A bright little alley in La Boca is a part of tango history.

A beautiful young girl said to have been buried alive in her coffin…

A tower devoted to — and modeled after — the Divine Comedy.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

Thanks to this small string of islands World War II still hasn't officially ended between Russia and Japan.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

A museum in the childhood house of a medical pioneer.

A submerged archeological park still holds the wonders of a Roman Sodom.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

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

A part of the world's largest marsh seems to be growing bright red Martian grass.

The largest pool at its elevation sits on top of one of the most expensive resorts in the world.

Where giant ships go to die.

Luxurious devotion and 500,000 images of Buddha in Myanmar.

A complex and beautiful system of rice terraces covers a million acres over the mountains.

Gigantic unfinished stupa and the world's 2nd largest bell.

A grand example of 19th century Burmese teak architecture, and the most significant of Mandalay's historic buildings.

A Surreal flight of architectural fancy in Vietnam's Central Highlands.

An extravagant monument to an extravagantly unpopular Emperor.

The cursed island of black pebbles.

World's largest cave was only discovered in 1991, and now offers tours to the public.