Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

This 14th century castle withstood years of battle but is now sliding off the hills into the Danube.

Civil War soldiers, captains of industry, and paupers all interred on historic grounds.

Atlanta's strange assortment of concrete pillars inspires reflection in some, confusion in others.

An underground magnet for ever-changing street art.

The first memorial dedicated solely to the Black troops who fought for the Union.

A bit of retro transportation flair preserved in the world's largest department store.

An overlooked memorial honoring the local Washington residents who died in World War I.

The "lovely red Vega" of the legendary record-settling pilot.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

The arch that celebrated the completion of the Lincoln and Victory highways.

This mother-daughter run curiosities shop is a beautifully odd mix of taxidermy and exotic plants.

An eccentric millionaire's personal curio collection includes at least one shrunken head.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

These pretty kitties killed and ate as many as 135 railway workers.

An antique narrow gauge railway line still running through the Colorado and New Mexico mountains.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

Three hundred years of preserved Spanish colonial history in San Antonio.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

The state bird of New Mexico, constructed entirely out of garbage.