This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

Even Henry David Thoreau found this glacial pothole irresistible.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

Stumps of an Ice Age forest, visible only at low tide.

The only one of New Hampshire's original 14 World War II watchtowers to survive in near-original condition.

The once-abandoned 140-year-old hotel used in the movie "In Dreams."

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

Bring out your dead (saints that have been festooned and bejeweled, so that we can parade them around the town)!

A graveyard and memorial chapel for victims of leprosy.

This small Bavarian graveyard is filled with empty graves for German soldiers lost during the World Wars.

These jeweled relics have a scandalous and contested past.

From morgue to urn, watch the whole process at this unusual educational attraction.

The name doubles as an appropriate adjective for this small ossuary.

Take a walk in a recreation of ancient Rome.

A preserved college lock-up that recalls a clubhouse approach to discipline.

A varied collection of brains in alcohol.

A former Nazi lookout tower with a magnificent view of the Rhineland.

A small square plaque marks a failed assassination attempt that could have changed history.

This magnificent museum claims to house the cranium of a disciple and the skull of a pope.

A rare example of a German cemetery with traditional grave markers dating back several generations.

The prison where Hitler wrote "Mein Kampf," and 278 Nazis were later executed for war crimes.

A Nazi concentration camp and Anne Frank's place of death.

As lake waters recede, a German village reemerges after more than a hundred years.

The stones of this formerly witch-obsessed castle were used to build a church.