The first official clock in North America, it kept time for the Spanish government of Santo Domingo.

On Hilton Head Island this bronze King of the Sea rules all things briny—and lets you know if you’re late for lunch.

Several times a year, during low tide, two pairs of historic train tracks are revealed on this New Jersey beach.

World War II bunker still standing on the New Jersey beach.

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

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

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

Dr Barnes' $25 billion private collection of art and arboretum.

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

Near the summit of Mount Washington, a stone monument remembers a life lost to one of the mountain's infamous storms.

Thirteen pastel palaces in downtown Charleston add a gorgeous splash of color to the city.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

These were the largest wind chimes in the world when artist Tom Van Sant created them for a California mall in 1967.

This statue inspired by Renoir's famous painting embodies the jovial spirit of Key West.

A historic landmark and museum filled with curious objects representing the history of Key West.

A monument celebrating the idea of reaching inaccessible places.

Costa Rican accommodation resembles a crash site, but with a nice balcony.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

Elevated freight railway turned wildly successful urban park.

Look closely and you’ll notice that the color changes a third of the way up the tower.

There’s a hidden military meme engraved on the World War II Memorial.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A beautiful Gilded Age hotel in the White Mountains with surprising diplomatic history.

A serene plaza that commemorates one of the Granite State's most iconic figures.