The massive machine creates cracking displays of indoor lightning.

America’s oldest community theater, this Boston club has been in operation since 1877.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.

For those going through a life transition, a place to leave behind a piece of your former self.

This semi-hidden Manhattan restaurant is based out of a loading dock.

This neighborhood grocery houses a treasure trove of Eastern European delights.

This small, hidden cove is home to abandoned boats.

Waterway populated with abandoned projects, including a submarine.

The home of aviation trailblazers, in a remote corner of the big city.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

Commemorating the 1948 creation of the Jimmy Fund, a Boston-based cancer charity.

This Dutch-styled residential building was originally a cocoa company's World's Fair showpiece.

The 1920s child prodigy author was last seen here at her Brookline home before vanishing at age 25.

This tower pays homage to a legendary Viking fort established in Massachusetts that never really existed.

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

One man handcrafts "the best sake made outside of Japan" in a tiny desert town on Route 66.

The oldest playground in America.

Museum dedicated to awful artwork.

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.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.