The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

A historic neighborhood church is reborn as a psychedelic arts collective.

A derelict bit of transportation infrastructure hidden in the woods.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

A unique columnar residence built in the 19th century.

This abandoned ironworks was once the most important military supplier in America.

This grave marks the passing of a historic Jane Doe whose identity remains a mystery to this day.

This nine-story building is the oldest standing skyscraper in D.C.

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

This grand gothic brewery has been pumping out suds for over a hundred years.

A local prank turned town icon.

Visitors flock to see this church tower's unintended feature: It happens to resemble a giant chicken from multiple points of view.

A complex and beautiful system of rice terraces covers a million acres over the mountains.

This abandoned five-star hotel is now a five-star urban exploration destination.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

A small but immensely extravagant palace built by the "Night King."

Perched on a spindly rock spire in a Greek archipelago, this lighthouse would make a perfect wizard's tower.

A fairytale-like medieval church perched atop a rocky cliff on Italy's "Coast of the Gods."

This lovely little bridge hidden in a Switzerland gorge is essentially a fairytale.

Hundreds of dwarf beeches create an unusual, haunting forest in the north of France.