A three-piece musical sculpture installed between the subway tracks at Kendall Station near MIT.

A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

D.C. once had its own tiny rival to the New York Stock Exchange.

Sports history, made in the Arroyo Seco.

Run by a eugenics advocate, this aging institution conducted secret radiation experiments sponsored by Quaker Oats.

Twisted buildings adorn the banks of the Rhine river.

This supermarket is suspended 25 feet above an interstate highway.

The oldest bar in Missouri is hidden within a limestone brewery cellar more than 50 feet underground.

It may look like no more than a full-scale model, but every part of this full Space Shuttle stack had a working role in aviation history.

Memorials and tributes scattered across the university grounds remember a famous national tragedy of the Nixon era.

A propulsion engine testbed that paved the way for the Space Shuttle launch sits without recognition at this rocket center.

This poor little statue is the most vandalized memorial in Washington.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

A hidden passageway now marks the site of an assassination attempt on Ronald Reagan that some say broke a 140-year-old curse.

The remains of a historic plantation nestled in between a parking lot and the rental car return at Reagan National Airport.

What was once a true peninsula has now been filled in, causing the water to recede and leaving many streetside "waterfronts" and landlocked "islands."

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

This classic red schoolhouse is said to have been where Mary and her little lamb went to school.

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

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

You can spend the night as an honorary lighthouse keeper in this quaint, historic beacon.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

The record holder for the world’s largest peach.