Vietnam's feral abandoned water park offers access to a post-apocalyptic funscape, now with fewer crocodiles.

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

Witness traditional silk production in the Uzbek city that's been a hub of sericulture for over a thousand years.

Final palace complex of the last of 29 Kokand rulers.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.

Ancient barriers wrap around what was once an important stop along the Silk Road.

Light still pours into the ruins of this ancient Islamic observatory.

The Avenue of Mausolea is a series of grand palatial tombs.

The controversial final resting place of the equally controversial first president of Turkmenistan.

A memorial to the thousands of Turkmen soldiers and civilians who died in a bloody 1881 battle.

Chronicling the history of Thailand’s unique currencies, from the silver “bullet money” to porcelain gambling tokens of various shapes.

This Khmer-era temple includes a lintel that was stolen and displayed at the Art Institute of Chicago for years before returning to Thailand.

All of Thailand's architectural landmarks, plus some made up ones, all viewable via two-seater bicycle.

Cities of the world and famous Thai monuments in minature.

This mountain sunrise is one of the most breathtaking views in Thailand, yet well off the tourist trail.

Buddha shrines hide within dark tunnels at this unique forest temple.

Abandoned mini-mansions that were once intended for affluent Bangkok families now sit empty.

During the rainy season, this temple is almost entirely submerged, accessible only by boat.

Monkeys lounge around at this 13th century temple.

A tall karst islet popularized by 007.

A limestone wonderland of water and subterranean secrets.

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

A white Buddhist temple with a golden restroom.

Stunning wetlands ablaze with pink lotus flowers.