Home of Howard Hughes' Spruce Goose.

On the Oregon coast there is a natural hole that seems to be draining the sea.

A logging-themed roadside restaurant surrounded by museum-quality machinery and artifacts from the industry's heyday.

This small, rural pioneer cemetery is full of interesting grave markers.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

The first North American landing spot for James Cook on his third voyage of discovery in the Pacific.

Tiny horses tethered to antique rings are scattered around the city.

This lighthouse was witness to the end of WWII hostilities and now collects creepy cairns.

A trio of colossal statues spread across a Dallas neighborhood chart the emergence of a giant robot born of a locomotive and spilled gin.

This downtown Dallas art installation is always on the lookout.

The site of the first "historically true" UFO encounter in the U.S.

The mansion home of author Edith Wharton.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.

With statues of Nelson Mandela and Harvey Milk this monument has been called the Mount Rushmore of California.

Dive bar built out of the remains of a whaling ship.

The memorial to the victims of the Jonestown Massacre carries the names of 918 lost, including one name people wish wasn't there.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

A working model of the entire San Francisco Bay and much of the Sacramento River Delta, complete with regular tides that change every 14 minutes.

William Smith's iconic "map that changed the world" is hidden behind a curtain in the Geological Society building.

Commercial airplanes land mere feet over the heads of sunbathing beachgoers on this tiny island.

A modernist landscape of water and sci-fi concrete.

Of course the grave of JFK's assassin is surrounded by conspiracy theories.