When the USA donated cement and funds to expand the airport in Laos, the Laotians built a massive monument instead.

A secluded, little-known temple hidden amid the dense jungle.

A French-Colonial era collection of taxidermy and wet specimens, secreted away in the National University of Hanoi.

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

Hindu temple of the dead home to hundreds of long-tailed macaques.

A haunting theme park is slowly being swallowed by the jungle.

Bali's remote "gateway to heaven" is one of the most sacred places on the island.

An abandoned hotel in the highlands of Bali is shrouded in stories of ghosts, curses, and corruption.

An eatery in a shallow river where diners can enjoy their meal mere feet from the base of an artificial waterfall.

Bangkok's men with dangerous jobs come here in search of protective talismans.

At the right time of day, sunlight floods through the roof of this cave and illuminates the small pavilion hidden within.

An enormous dragon scales the walls of this 17-story temple.

A limestone wonderland of water and subterranean secrets.

The crypts are so large they're basically their own underground church.

Tucked behind the Institute of Neurological Science down a decrepit street resides the largest display of human brains in Latin America.

Sleep in a glass pod dangling off a cliff.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

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