The first permanent memorial to a unique secret weapon of World War II.

An out of this world experience.

The unusual burial monument of Arizona's first governor.

The historic “pink house on the hill” is an architectural gem that now serves as a center for water conservation.

How did the 110-ton limestone statue cross the road?

This 16-foot-diameter wooden coin has been standing in Iowa City since 2006.

Sip a cappuccino in the historic cafe that introduced them to the United States.

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

The site of a popular piano lounge owned by a former world champion boxer is now a place to rent a truck.

Millions of years of erosion created the feature for which this rock formation is aptly named.

A mysterious "wedding cake" castle in the middle of the urban desert.

An open-air, roadside eatery celebrating a historic indigenous cuisine of complicated significance.

A historic hydroelectric power plant serves as the unusual backdrop for a public park.

A geological mystery on Camelback Mountain.

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

A towering bronze statue memorializes the founding father of postwar American conservatism.

The classic Christmas carol was written at this Massachusetts tavern in 1850.

The oldest living cultivated fruit tree in North America.

This picturesque abandoned home is rumored to be a spite house.

An artist's cute bronze subway sculptures belie his violent artistic past.

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

The mummified relics of an American missionary.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

A 19th-century politician who died after walking home in a blizzard is honored with this Manhattan statue.