The land is home to swimming ponies and a legendary 18th-century treasure.

The ancient tomb acts as a calendar that keeps perfect time.

This handsome giant is said to mark the birthplace of the mythical woodsman and even had a cameo in a Stephen King novel.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A miniature city, once ruled by the Queen of the Netherlands.

Impossibly life-like natural history models created out of glass by a father and son.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

The only Civil War battle in Washington D.C. took place near this highest natural point in the city.

The shelves in the back of this thrift store are devoted to saving, not selling, retro tech.

This abandoned sea fort has become an accidental bird sanctuary.

An astounding collection of medical specimens, including bits of President Lincoln.

Walk a trail through a historic Quaker town that outlawed slavery in 1777 and was a major waypoint on the Underground Railroad.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

This free, take-a-book shop seems like a trick but isn't.

The likeness of the Baltimore music icon was unveiled in time for the anniversary of his Senate hearings on music censorship.

Meet some of the most prominent figures in Black history through life-sized wax models.

A hidden alley in urban Baltimore is a haven for graffiti artists.