Yo, Adrian!

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

This collection of odd proofs of concept is like taking a walk through the imagination of a Victorian engineer.

What began as an art installation is now the private drinkhaüs for a brewery's employees.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

Spectacular mineral formations fill these caves, which have been used for everything from smoking meat to stashing illicit liquor.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

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

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

The man who first patented the Ouija board rests in peace beneath a headstone that playfully reflects that achievement.

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

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

The trials and tribulations of marking Poe's grave.

The childhood home of the Sultan of Swat is just a line drive away from Oriole Park at Camden Yards.

This abandoned Victorian-style house was built in 1884.

The shelves in the back of this thrift store are devoted to saving, not selling, retro tech.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

Amid the sprawling Defense Intelligence Agency Headquarters is one of Washington's least accessible museums.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

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

The National Park Service’s best-kept secret with views that rival any in D.C.

A hidden passageway now marks the site of an assassination attempt on Ronald Reagan that some say broke a 140-year-old curse.

The final resting place of an unidentified revolutionary soldier sits behind a Virginia church.