The most confusing clock in New York.

Visit the monolithic tomb of America's most famous general.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

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

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

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

Only hotel where you can legally launder money.

An extensive collection of ancient Egyptian artifacts and mummies.

The long, arduous journey of the stones of the Abbey of New Clairvaux.

A haunting tribute to pioneering photographer Clover Adams.

The United States Capitol's former columns still stand.

Bar full of oddities, specimens, artifacts and homages to the great dime museums of the past.

At 207 feet, one of the world's longest continuous escalators.

Parking garage where Bob Woodward met Watergate source "Deep Throat."

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

Worker-owned cooperative and resource for those looking to lighten their ecological footprint.

The Empire Mine is "one of the oldest, largest, deepest, longest and richest gold mines in California."

Eclectic collection of dark and macabre antiques.