The first museum in the United States dedicated entirely to posters.

Church in Manhattan holds the bloody sock of Padre Pio, among with many other unusual relics.

Graffiti-covered ruins that were once part of a farm owned by a mental hospital.

Walk through row upon row of manicured miniature trees at the United States' largest bonsai nursery.

One of the last Depression-era bandshells still standing was the site of Elvis Presley’s first live concert.

This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.

This park offers a variety of sights and activities including trail rides and buffalo sightings.

The biggest drug trafficking passage between Mexico and the U.S.

Abandoned rock quarry now a haven for mountain bikers and hikers.

Software company Epic Systems has created one of the strangest and largest workplaces of all time.

A bronze plaque marks the site of the only show the "King of the Soul Singers" ever missed.

Hidden away in the city of Madison, Wisconsin is a nearly forgotten home that Frank Lloyd Wright built for a childhood friend.

A renowned Civil War veteran, this Bald eagle now presides over the Wisconsin State Assembly.

Comprised of Spanish war cannons, this sculpture once graced the bow of a WWI warship.

Before he was America’s most famous preservationist, John Muir was an ingenious mechanical inventor.

More than 5,000 contemporary and "historic" mustards from around the world.

A largely forgotten and touching neoclassical marble fountain overlooking a bear mound effigy.

"Looks so real, it's scary!"

The arboretum whose marshy soil sucked up the dreams of housing developers.

Where experiments are conducted on all things wood.

This forgotten beach house built to look like a Frank Lloyd Wright masterpiece overlooks a hidden beach.

The final resting place of one of Thomas Jefferson's formerly enslaved sons.

Three playfully immersive mini golf courses let you travel alongside your ball to the cup at this facility, which has been around since the 1950s.

A somber monument commemorates the site of a Native American reservation marked by suffering.