Crafted in 1911, this steam locomotive spent its entire working life in Flagstaff.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

This sidewalk tribute honors Colorado's great culinary creation.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

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

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

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

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

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

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

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

The oldest surviving botanic garden in the United States.

Yo, Adrian!

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

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

This sculpture of a fisherman spent six years at the bottom of the Schuylkill River.

The world's third-largest crystal sphere has sat in the Penn Museum since 1927 with the exception of one outlandish theft.

A layered tribute to the work of mosaicist Isaiah Zagar.

This beloved marketplace mascot poops money and grants good luck.