This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

This former boomtown "island" is now submerged below Folsom Lake.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

Cliffside houses provide a spectacular view from their perch above the valley.

A Spanish town built into the cliffs.

18th century anatomical amphitheater of the Royal College of Surgery of Barcelona.

A gargantuan crystal kingdom.

This partially buried wreck is one of the most complete of its kind but is only revealed when the sea allows.

Where the polar bear watches over everything, and every drink is a double.

One of the oldest reform schools in the United States, home to wayward boys such as Merle Haggard, now abandoned.

Wool processing mill in an unlikely location.

A whimsical antique shop with a strong air of mystery, filled with items from ages, and what feels like worlds, past.

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.

Early prototype for Frank Lloyd Wright's Guggenheim.

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

A store that sells all manner of bones, insects, and animal curiosities.

An amazing collection of fantastic reptiles, amphibians, spiders, and insects.