At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

These unusual rooms on wheels are holdovers from the 1960s.

This statue of one of baseball’s greatest pitchers looks like something out of a sci-fi horror movie.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

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

Louis Sullivan’s dark, swirling cast-iron designs envelop a popular department store in this Chicago landmark.

Explore an underground labyrinth of miniature railroads.

The oldest purpose built museum in Illinois, home to original Victorian taxidermy.

The oldest operating hotel in Illinois enjoys a historic (and some say haunted) past.

The first home and studio that belonged to the famous architect.

In 2004, a Dave Matthews Band tour bus dumped 800 pounds of waste off a bridge and onto an unsuspecting tour boat below.

Chicago’s last original drive-in restaurant is a family-run hot dog joint that started in 1948.

See where Bill Murray kidnapped a hapless Punxsutawney Phil.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

A journey begins with a single step, and for many, the road-trip of a lifetime started at this Chicago intersection.

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

A scenic natural bridge with a creek running underneath.

This historic Union Pacific Railroad depot is a stunning symbol of American post-Civil War progress.

This archaeological dig site and museum is home to one of the largest dinosaur fossil collections in the world.

Named for a prominent scout and explorer, this Wyoming state park encompasses a replica of an 1840s trading post, a 19th-century Army outpost, and early 20th-century automobile lodgings.

One of America's largest retail chains got its start in one of its most remote rural destinations.

An unusual geological feature towers over the remains of a dark episode in United States history.

The only retired U.S. nuclear missile silo that is open to the public.