This incredible collection of vintage pinball machines can be played at 25 cents a pop.

A small flooded ghost town with a few scattered structures remaining.

This colorful gate stands as an entrance to the walled city of Old San Juan.

An architect's childhood fantasy treehouse made real.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

This mural changes every few years.

Local lore holds that Butch Cassidy took an escape route through Red Canyon's sandstone hoodoos after an attempted murder.

A dazzling display of red rocks weathered into spires and hoodoos.

In 1952, this restaurant began selling the Colonel's “secret” recipe.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

A plaque and memorabilia collection mark where A&W got its start.

The longest covered bridge west of the Mississippi River.

This airfield played a key role in both World War II and the Cold War.

The first project by the Bureau of Reclamation illustrates both the upsides and downsides of reclamation.

This large, castle-like structure is hidden amid the mountains on the grounds of the Utah State Hospital.

This former wildlife sanctuary is being transformed into an art park.

The most isolated mailbox in America lets desert travelers record their passing.

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

A fine, large-aperture telescope available for public use.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

Some North Carolina Cherokee have been keeping their history alive for decades with a single play.

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

"Mock all and sundry things, but leave the saints alone."