America's original house of worship for Spiritualism, the religious movement based on communing with the dead.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

An Irish Memorial commemorating those who perished due to potato blight.

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

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

The first American department store, and home to the largest operating musical instrument in the world.

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

Yo, Adrian!

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

Historic funicular railway, believed to be the shortest railroad in the world.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

Flip your own pancakes in this old sugar mill within a Florida state park.

The site of a gold-digging conquistador's bloody landing in the Americas.

This historic hotel invented the chocolate brownie.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

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

Less a museum than a bizarre fantasy world created by artists and engineers.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

Perhaps the most scandalous statue of America's first president.

The monument's pointy aluminum tip has been melted down by repeated lightning strikes.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.