Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

An extravagant monument to an extravagantly unpopular Emperor.

A Turkish ghost town abandoned in a population exchange with Greece.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

A marvel of Byzantine engineering under the streets of Istanbul.

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

Whitewashed mosque contains the world's largest carpet.

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

An exploration of Malaysian heritage through the lens of traditional textiles.

A historical convent known for taking in bad luck babies left on its doorstep is now an upscale shopping center.

This $62 million dollar temple was erected to house one little dental fragment of religious history.

Singapore's landscaping project is home to 18 incredible Supertrees.

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.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

The quintessential Japanese rock garden has existed for more than 500 years.

The 10,000 Torii shrine.

An imposing Omani fortress surrounded by date palm trees.

A vast, otherworldly collection of Buddhist stupas.

A series of tiny artificial islands rich with produce bob atop the surface of the lake.

The oldest teak bridge in the world is made from the remains of a royal palace.

This golden temple is surrounded by hundreds of stone tablets that comprise the "world's largest book."