An intricately designed junk art house with four extravagant junk art cars hidden in the suburbs.

It was once the base for a series of domestic terror attacks.

A restaurant modeled after feudal Japan, where the waitstaff are trained as ninjas.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

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

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

A wealth of local folk art, antiques, and curios, without ever leaving your car.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

A slingshot from this delightful collection is awarded each year to someone who has "pulled metaphorical slings in favor of the weak and marginalized."

The oldest Dutch colonial stone house in New York City is a hidden gem on the border of Brooklyn and Queens.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

This peculiar museum offers hands-on interaction with seemingly intangible principles of mathematics.

The last slot car racing arcade in Brooklyn is keeping the dream of speedy little autos alive.

An open-air museum in a mountain valley features works designed to blend in with—and disintegrate back into—their natural surroundings.

Money made from smuggling sugar helped create this wondrous rock maze in honor of the Prussian Queen Louise.

A semi-abandoned replica of Prince Edward Island's Avonlea—in Japan.

The only known Futuro house in North Carolina sits along a stretch of desolate highway on the Outer Banks.  .

This isthmus in the Bahamas narrowly separates the roiling Atlantic from the cool Bight of Eleuthera.

The first bridge observation tower in the U.S. offers one of the best views of Maine.

This modern museum of Mediterranean culture is surrounded by a surreal concrete honeycomb.

A unique sculpture park that specializes in the huge and bizarre.

The Icelandic Sea Monster Museum explores the area's history of aquatic cryptid sightings.

One man's ambition created this psychedelic log home.

Monsters and miniatures are held in equal esteem at this wondrous museum.