This retro, UFO-like structure is a remnant of the Soviet-era circus.

An outstanding piece of retro Sci-Fi architecture built into a sacred mountain.

The origin of this sinisterly shaped forest is rooted in mystery.

An unusual monument to a gentle giant who became a Kyrgyz hero.

This village was once a thriving Soviet uranium mining center, but is now semi-abandoned and desolate.

Beautiful palace stands tall over the Fergana Valley.

One of the most ethnically diverse spots on the planet.

These "50 Fortresses" have been unearthed in the ancient oasis of Khwarezm.

Final palace complex of the last of 29 Kokand rulers.

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

Once a bustling fishing port, this semi-ghost town is now more than 90 miles away from the shore.

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

This grand Pakistani mausoleum can only be accessed via an almost 1,000 foot long alleyway.

These stairs were built to accommodate royals mounted on elephants.

A submerged village appears when dam levels drop.

The mysterious empty cupola behind the monumental arch points to an ancient prophecy of Delhi.

This giant Buddha statue has 125,000 smaller Buddhas hidden inside it.

This penis-focused monastery is dedicated to Buddhism's "Divine Madman."

This garden is very fertile.

The small sanctuaries lie just off the beaten path near one of Bhutan's most famous attractions.

The small cliffside monastery known as the Tiger's Nest is said to be the meditation site of an 8th-century Buddhist master.

The place that allegedly inspired James Hilton's depiction of Shangri-La.

Lunar landscape, a mud volcano and bizarre rock formations.

The world's second largest salt mine, said to have been discovered by Alexander the Great's horse.