Long-abandoned art nouveau baths beneath Milan's Piazza Oberdan.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

A Montreal deli that was so beloved that it was allowed to circumvent their laws of language.

Willy Wonka would love this weird half-a-home.

With well over 130 falls and cascades to brag about, Hamilton, Ontario has earned its stripes as the waterfall capital of the world.

Sleep snuggled in a sphere suspended atop the forest canopy of Vancouver Island.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

One of the world's largest model railroads is a mind-boggling achievement.

Along the Palisades skyline are the ruins of a large mansion built in 1911 and demolished in the 1930s.

This tiny New Jersey village has lived many lives but seems determined to remain a ghost town.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

A blend of art, antiquities, and Americana fill this museum, surrounded by whimsical, enchanting gardens.

A scenic fort on the harbor protected Philadelphia from an attack that never came.

Once a speakeasy operated by Al Capone, this Milwaukee cigar bar is now a haven for ghost hunters.

Robots, lasers, and whoopee cushions, oh my!

Opulent downtown movie theater now houses cars as an indoor parking garage.

The bones of an old zoo crumbling in the shadow of a new one.

This Detroit ruin was once a gothic bastion of its community, but now it stands as a haunting ruin.

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.

Hans Christian Andersen for the postmodern world.

A fake Transylvanian castle houses a cathedral of antlers.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."