This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

New York City's smallest piece of private property.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

New York's oldest magic store.

Try not to get slimed in Tribeca.

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

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

An existential riddle in the world's largest ancient castle.

Monument to a suicide protesting the Soviet invasion.

A saintly relic hidden in a Prague church basement.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Macabre astrological automaton clock dating to the late 1400s.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Metro station with a claim to rock n' roll fame.

Cold war icon and onetime "hole" in the iron curtain.

From Iggy Pop to David Bowie to Nick Cave, this regal music studio has served some of the all time greats.

Berlin's old airport.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

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

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.