The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

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

The most decorated dog of World War I is preserved in the Smithsonian.

Home to items never before seen by the public.

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

Divinely-inspired village houses 6,000 dolls, plus strange and lovely outsider art.

Garden dedicated to native carnivorous plants and site of huge flytrap heist.

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

San Francisco's newly reopened hands-on science museum.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A working miniature city designed to teach kids about safety and presumably city planning.

Within this lovely Richmond cemetery lie the remains of famous Virginians and some of Edgar Allan Poe's most beloved family and friends.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

The resting place of a Civil War celebrity's amputated limb.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

This war hero's old shop remembers the fine line between medicine and quackery during the Revolutionary War.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

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

At 207 feet, one of the world's longest continuous escalators.

The romance of early commercial flight still fills this Art Deco destination.

A former major munitions plant that has been converted into a sprawling art space.