Ethereal alien hums and haunting whale songs emitting from...a giant sheet of vibrating metal?

This replica of the Greek structure is in the heart of Nashville.

The alley connecting two of country music’s most historic venues has a rich history of its own.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

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

A tiny piece of the Moon is embedded in this stained glass masterpiece.

An aptly-named street near the birthplace of the modern LGBT rights movement.

This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

The oldest living tree in Manhattan comes shrouded in sinister legend.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

A bit of retro transportation flair preserved in the world's largest department store.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

One of only two commuter aerial tramways in the United States.

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.

This beloved marketplace mascot poops money and grants good luck.

Huge masonic hall in Philadelphia with lavishly themed rooms.

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.

An abandoned Gold Coast-era mansion once intended for the exiled ruler of Albania, who never arrived.

"Call for the doctor, call for the nurse... Vote!! said the lady with the alligator purse."

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