A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

New York's oldest magic store.

Elevated freight railway turned wildly successful urban park.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

An old Danish political institution where members of government can grab a drink off the record.

The art museum is decorated with creatively remodeled pre-Nazi swastikas.

Danish observation tower designed to look like a giant beer bottle.

The largest bottled beer collection in the world holds over 22,000 unique beer bottles.

This chimerical bridge/tunnel appears to dead end right into the sea.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Hotel designed by indie graphics artists.

Copenhagen's celebrated theme park and gardens.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

A legendary speakeasy bookstore returns from the brink.

Try not to get slimed in Tribeca.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

What happens here stays here – unless it affects the whole world.

The oldest living tree in Manhattan comes shrouded in sinister legend.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.