A hand-built folk art installation covered with messages of God's love.

The ghostly remains of an accidental sea.

One of the largest trees of its kind in California.

One of the few remaining carousels built by master amusement park carver Charles I.D. Looff.

Florida’s half-sized replica of the Vietnam Veterans Wall.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

Surprisingly aquamarine waters fill deep lakes formed at the end of the last ice age.

The world's oldest and largest museum of mass transit vehicles.

A giant toy jack made of numerous welded-together fire hydrants.

This large cemetery is known as the museum of granite sculptures.

A flooded Mexican cave that hides a river beneath the water.

Two waterfalls flow down the cliff faces decorated with rare natural basalt columns.

The ruins of an ancient Mayan city, beautifully preserved and only accessible by boat.

This beautifully deceptive waterfall is something far different from what it appears to be.

A 500-year-old series of tunnels long believed to be folkloric was uncovered beneath the streets of Puebla.

World's largest magnetic research facility.

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

The second-largest ceremonial mound in the United States is an artificial hill that is loosely shaped like a pentagon.

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

Storyville was New Orleans' historic red light district and hotbed of jazz music, sometimes referred to simply as "The District."

This "second" cemetery represents New Orleans' attempt to keep cholera at bay.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.