A 30-foot stack of piano keys memorializes one of the greatest keys players in jazz history.

The oldest remaining authentic Putt-Putt course that Donald Clayton created in Ohio.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

This beautiful stone arch bridge wasn't even expected to stand for one day, but people have been crossing it for centuries.

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

There aren't too many operational funiculars around, but Pittsburgh has two!

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

An office built to look like a giant basket.

Constructed from the ruins of a former glass factory, this park incorporates the old with the new.

The 10-foot-tall vegetables belong to Michigan’s first food rescue program.

These gardens recreate unique and endangered Michigan habitats.

The oldest surviving presidential residence in the United States.

An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

A failed piece of Orientalism has become the proud symbol of a community.

This semi-spooky remnant of an abandoned hotel provides fantastic views.

This tiny structure was built by the creator of the Brooklyn Bridge.

This stone tower marks a lookout point over the historic Washington Crossing, and maybe some buried treasure.

A historic covered bridge is but one example of an oddly prevalent American urban legend.

This might just be the TARDIS of bookstores.

One of the oldest log cabins in America is one of the last of its kind this historic Swedish dwelling remains a piece of living history.

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

The final resting place of one of the United States's greatest poets.