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.

An overlooked oasis of quiet on the grounds of Washington's monumental basilica.

Washington's iconic carousel has a nice piece of Civil Rights history.

The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

Largest Roman Catholic church in North America.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

The site of the climactic scene from the classic horror film is now a historic landmark.

There must be a pun in this haystack somewhere...

The site of the deadly Triangle Shirtwaist Factory Fire.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Elevated freight railway turned wildly successful urban park.