Places Edited by SEANETTA ALLSASS

The largest of London's subterranean rivers and once a mad, bad center of London life.

A comprehensive collection of Pez dispensers.

A crucified and bearded female saint.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

A 30-acre garden inspired by the principles of modern physics.

The remains of Crystal Palace Great Exhibition of 1851.

Longtime headquarters of controversial boys' club for the world's wealthiest and most powerful.

A 200-year-old collection of oddities and medical paraphernalia.

A student driver's nightmare.

The blood-soaked ruins of the castle where the murderous Blood Countess was walled in alive.

A book bound in the skin of an infamous criminal, along with countless other specimens.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

The restored and active Victorian-era final resting place of San Francisco.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

Alleyway plaque commemorating the death of a fictional character in The Maltese Falcon, not far from the author's home.

Two stunning 17th-century libraries and a cabinet of curiosities.

The curious and tiny collection contains some very odd objects.

Macabre museum devoted to historical Viennese murders.

A semi-scholarly approach to sex.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

Elevated freight railway turned wildly successful urban park.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

A historic house left in "dramatic still life."

Vast fan-shaped British cemetery honouring American servicemen lost in World War II.