A little slice of Japan and its aesthetics in London's Holland Park.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

Weird wax anatomical models reside here, as do other anatomical specimens.

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

Hidden away in a modern library are the remains of one of the 18th century's most celebrated wunderkammers.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

A subterranean shelter remains intact under a busy Paris railway station.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

This Parisian café sticks almost exclusively to an ethos of reuse.

Jesus' footprints and the first catacombs in the world.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

Pompeii's less famous neighbor is still revealing her secrets.

There must be a pun in this haystack somewhere...

America's oldest Eastern European synagogue provided the immigrants of crowded Lower East Side tenements a space of sanctuary.

A whimsical, but often overlooked clock in Park Avenue.

Cryptic messages embedded in the New York City sidewalk.

An annual extravaganza of Broadway theater memorabilia.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.