Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

This North Carolina museum is keeping the pinball craze alive, with a little Space Invaders on the side.

These boots are made for selfies.

A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

Huge abstract sculptures of the Puerto Rican Flag.

To find the "unicorns of the deep" you've got to go downstairs.

A wonderful display of arts and crafts handmade by local artisans in the Southern Appalachians.

Every week, a festive public jam session breaks out in downtown Asheville.

A diorama of the Civil War, fought by cats.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

These pretty kitties killed and ate as many as 135 railway workers.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

Just like the real 36th president of the United States, animatronic LBJ amuses visitors with jokes and stories.

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.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

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

Go take a picture with the inventor of the daguerreotype photographic process.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.