Ancient catacombs form the foundation for this Rococo orgy of a church.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

Giant pagoda houses the car that drove Thích Quảng Đức to his death by self-immolation.

Subterranean place of worship in Indonesia.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This beautiful 16th-century necropolis marks an astonishing feat in heritage conservation.

A tribute to the pop culture icon overlooks this Washington D.C. intersection.

The mysterious megaliths have enchanted and intrigued visitors for thousands of years.

This twice-relocated "Usonian" home is among the smallest built by master architect Frank Lloyd Wright.

Taste the white whiskey that the United States' first president once distilled and enjoyed.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

Once forgotten and built over, this historic Black cemetery now houses a poignant memorial.

This brick-lined pedestrian walkway was once a railway tunnel used during the Civil War.

An original apothecary from 1792.

A former major munitions plant that has been converted into a sprawling art space.

A superbly preserved example of Georgian residential architecture that was once home to one of the founders of Alexandria, Virginia.

Time capsule of a museum, in which the Soviet Union remains alive and kicking.

Giant relaxing Buddha in Malaysia.

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

This elaborate temple was built around one of the Buddha's teeth.

One of the last surviving ancient Buddhist sites in the region, it escaped the brunt of several Hun invasions thanks to its remote location.

Ecuador’s historic seat of government has been quietly looted in recent decades, and no one knows how or by whom.

Quito's historic, main square dates back to the 16th century.

Ecuador's largest Incan ruins show evidence of sophisticated irrigation and diplomacy among the ancient builders.