The undercroft is a spectacular example of medieval Cistercian architecture.

A section of the long chain that blocked enemy ships from entering Constantinople.

This mesmerizing statue of a child wrestling an anteater symbolizes the native culture and biodiversity of São Paulo.

Home to a giant switchblade and one of the world's largest collections of pocket knives, this museum is a cut above the rest.

When the river dries up, these stones start talking.

Sweden's southernmost prehistoric rock art is hidden just outside Gothenburg.

One of only two pod-shaped homes designed by Frank Lloyd Wright.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

The dramatic remains of an abandoned farmhouse sit high on the edge of a remote hillside.

A Neolithic tomb hidden among a spectacular boulder-strewn stretch of coast.

Its collection details the experiences of the largest Japanese community outside Japan.

The machines behind the famous handblown glass from Sweden's "Kingdom of Crystal."

At less than four inches in height, this iconic fictional character is the smallest public statue in all of Moldova.

This giant mural of Santa Muerte in downtown São Paulo reminds passersby of their own mortality.

Originally a meeting place for foreign correspondents and war reporters, the FCC remains an atmospheric spot for sunset drinks in Phnom Penh.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

These particularly resplendent rodents are the state animal of Maharashtra.

Amazing taxidermy dioramas from the 1960s in a cement building meant to look like an ice cave.

The highest tides in the world come in and out here twice a day, allowing you to essentially walk along the ocean floor.

This small oasis of flora and art was created in remembrance of a local auto business owner.

An enigmatic mural hiding in plain sight in one of São Paulo's busiest metro stations.

Built on a medieval synagogue, this church has a burial crypt, tunnel system, and Jewish ritual bath hiding deep underneath.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

A cozy bookstore is tucked within an old gold mine shaft beneath the cafe and ice cream shop.