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

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

The Corinthian columns that towered over Abraham Lincoln’s inauguration stand proud.

The trials and tribulations of marking Poe’s grave.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

European castle ruins in an American state park are actually the product of death and grief.

There's more contention than one might expect from cherry pie pans.

A popular place to pick up prehistoric coral fossils from the time when Michigan was an ocean.

A lovely hidden waterfall right off the highway is well worth a stop.

Statue dedicated to the star of an old television show.

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

A metal ring in the middle of the road marks the exact spot where the Soviet satellite crash-landed in 1962.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

Look closely and you’ll notice that the color changes a third of the way up the tower.

It was once the base for a series of domestic terror attacks.

Rumor has it the hot dog stand was targeted by two Russian nuclear missiles.

One of the most influential presidents in U.S. history wanted only this plain, elegant monument as his lasting memorial.

A much-maligned monument to teetotalism.

This sandwich shop has a century-old elevator behind a sheet of plexiglass.