A lawn full of retired spacecraft on display at one of NASA's first research labs.

The 320-year-old tree that greeted General Lafayette and rerouted an interstate highway.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

This former asylum for Black Americans is haunted by its history of violence and racism.

A haunting exhibit in a wildlife refuge center highlights threatened species and the conservation efforts needed to save them.

Senators used to relax in the nearly forgotten marble tubs now hidden in the U.S. Capitol Building's basement.

Corn-inthian columns with a uniquely American take on neoclassical architecture.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

An ear-piercing buzzer calls lawmakers to a vote with a series of long and short rings to form coded messages.

During Prohibition, the U.S. Congress had an "official" bootlegger, with his own Capitol Hill office.

The first plantation museum in the United States to focus on the lives of enslaved people.

Ship skeletons haunt Baltimore's waterways.

Fiji mermaids, mummified remains, and recreated cryptids are among the morbid oddities at this Maryland museum.

The attic and basement house two museums stuffed with oddities like swallowed spoon handles and a shrunken head.

The museum calls itself the "National Museum of the Paranormal" and is full of eerie oddities.

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

Electronic inventions that resulted in products and systems we use every day are on display in this labor-of-love museum.

A priceless collection of the Nation's cryptologic history.

Need a hardcopy of the 50-title Code of Federal Regulations? This is the place.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

Railroad officials in the early 1900s sought to spare travelers the sight of Roman soldiers’ private parts.

An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

The privately owned cemetery that holds room for Washington's finest when they step down from life.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.