One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

This landmark cemetery in Boston was created more than 300 years ago.

Radical Bookstore and Community Space.

One of the now-less-hidden floral gems of the "Emerald Necklace."

The Boston square dedicated to the dark poet who was born nearby.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

The 32nd president's sprawling cottage sits on an island enclave jointly managed by the U.S. and Canada.

A beautiful Arctic museum and nature center preserves the culture of the Sámi people.

The mysterious canine hides atop a drain pipe on the back of the building, some say as a sneaky shoutout to Yale.

An architecturally unique lighthouse that had to be lifted up and moved to avoid falling in the sea.

The second oldest Jewish graveyard in the U.S. is tiny, with connections to George Washington and Henry Wadsworth Longfellow.

A 60-room castle constructed by a horse-racing heir.

This Rhode Island mansion was a stand-in for the exteriors of Collinwood in the original "Dark Shadows" series.

Tracks near this Texas nature site were once thought to support the Creationist belief that man and dino coexisted.

A "Texanic" (gigantic Texas) collection of Art Deco architecture at Dallas' historic Fair Park.

A mythical chimera first sculpted in 1936 as a mix of the main animals of Texas livestock.

This downtown Dallas art installation is always on the lookout.

A trio of colossal statues spread across a Dallas neighborhood chart the emergence of a giant robot born of a locomotive and spilled gin.

Belly up to the bar in Cowtown, don't forget to buy some boots.

A modernist landscape of water and sci-fi concrete.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

A contemporary fresco movement illustrates the region's rich history.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

Perhaps the most scandalous statue of America's first president.