Daily jousts and dancing barrel makers in Munich's mechanical clock.

Home to three historic ships from the age of Vikings.

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

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

The first museum in the world devoted to sexual gadgetry.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

Macabre astrological automaton clock dating to the late 1400s.

This erect, phallic geological spire wasn't always named so domestically.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

The first declared National Monument in the United States.

The longest navigable underground river in the United States is home to countless blind and albino animals.

This unassuming home was once “grand central station” for the Underground Railroad.

A lesser-known part of the Kinsey Institute is this impressive collection of art, artifacts, and material culture related to human sexuality.

This mysterious hill seems to pull objects uphill.

A flamboyantly decorated bridge signals diversity and fellowship at the entry to Indianapolis' Broad Ripple Village.

Once adorning a New York skyscraper, these reclaimed ruins now haunt an Indiana park.

This hidden stream beneath Indianapolis makes an appearance in the best-selling novel "Underground Airlines."

A monument to the center of the North American continent may be off by a few miles.

A true roadside icon standing on the same plains that the herds once roamed.

These crudely shaped folk giants may be the the second most photographed statues in the U.S.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

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