This municipal playground was co-created by the father of one of the most playful characters ever.

A tree grown from astronaut seeds which were exposed to cosmic rays.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

The biggest solar telescope in the world helps reveal the secrets of our sun.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

This burger joint is named after everyone's favorite carnival prize and is adorned with a giant one over the door.

A museum dedicated exclusively to aircraft used in the military.

Scenic mount trashmore, Virginia Beach's most curious waterfront still has a couple of secrets.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

This replica of the Greek structure is in the heart of Nashville.

A white oak with property rights.

After just one epic test blast, this literal loose cannon proved too explosive for combat.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones’ locker.

A former major munitions plant that has been converted into a sprawling art space.

At 207 feet, one of the world's longest continuous escalators.

The "lovely red Vega" of the legendary record-settling pilot.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

Parking garage where Bob Woodward met Watergate source "Deep Throat."

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Outsider art meets paleontology at this roadside reptile repository.