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

The only structure left with direct ties to the Salem witchcraft trials of 1692.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Home to items never before seen by the public.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

The magic's in the hole!

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

A museum dedicated to the history and exploration of both popular music and science fiction.

A wall of chewing gum moonlights as collective art.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

There aren't too many operational funiculars around, but Pittsburgh has two!

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

A giant ball made from pieces of an old Jeep.

Despite being stolen multiple times, this civic electrician's street corner Snoopy won't be stopped.

This historic Pittsburgh tennis complex is a rare example of natural red clay courts.

This picturesque stream was up until recently the site of a ten story mountain of slag and sewage.

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

A larger-than-life statue of America's favorite sundae marks the place it was invented.