Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

A semi-scholarly approach to sex.

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

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Eight rare Corvettes are swallowed up by a sinkhole in Kentucky's National Corvette Museum.

A remnant of the original World Trade Center complex continues to serve as a commuter gateway.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

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

The "world’s largest honky-tonk" also has its own indoor rodeo arena.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

Historic Hull Street was actually the first street with a proper name in the Boston area.

Statue commemorating the use of ether in anesthesia.

Elvis's own personal tropical hideaway.

A small collection of iguana-infested ruins hides amid Cancún's bustling hotel zone.

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

An eccentric inventor's castle home with its own indoor weather system.

A museum dedicated to the quirky and colorful world created by Springfield's favorite son.

Life-size bronzes of the Grinch, Cat in the Hat, Yertle the Turtle, Sam-I-Am, and the Lorax—and the author himself.

This landmark cemetery in Boston was created more than 300 years ago.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."