Fascinating museum dedicated to the under-appreciated medical history of urology features some wince-inducing devices.

A blank headstone topped with a pile of pennies marks the final resting place of the infamous assassin.

The land is home to swimming ponies and a legendary 18th-century treasure.

An astounding collection of medical specimens, including bits of President Lincoln.

Bizarre Cavern.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

The trials and tribulations of marking Poe's grave.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

During WWII the U.S. Navy conducted primitive drone strikes on this Lake Michigan lighthouse.

Unique collection containing a wide and curious range of contraceptive items.

Literal "money laundering."

An obscure public service from the U.S. government that redeems burnt, moldy, and soiled old greenbacks.

Where the U.S. government kept its actual treasure, before Fort Knox.

Helen Keller once broke ground on this historic center for the study of technologies to benefit the hearing impaired.

America's Most Wanted's set resides in this tribute to the history of crime and punishment.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

This grand gothic brewery has been pumping out suds for over a hundred years.

The site of the climactic scene from the classic horror film is now a historic landmark.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

Hidden for 165 years inside a building designed by Thomas Jefferson are the remains of what may be America's first educational chemistry lab.

An extensive, if one-sided, history of U.S. law enforcement's war on drugs.

One street divides a single town that stands in two U.S. states.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

An original apothecary from 1792.