A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

An urban laboratory.

This private residence was the template for one of the most beloved television homes of all time.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.

Rochester's signature culinary delicacy.

A portion of the old Pirates stadium over which a defining home run once flew still stands even after the rest of the stadium was torn down.

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

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

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

A completely round house designed for the Atomic Age.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

The oldest surviving botanic garden in the United States.

A tiny, unmarked beer and whiskey bar above an Ethiopian restaurant in West Philly fails to conceal live bluegrass.

Century-old shop, specializing in Occult products.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

Yo, Adrian!

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

This elaborate towering structure was once famed for its revolutionary height.