Vintage steam trains that still run through a pre-Civil War tunnel

A motel dedicated to Southwestern nostalgia.

It's safe—and permitted—to walk across these twin natural sandstone arches.

This site is home to ancient petroglyphs and pictographs dating back to 6,000 B.C.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

A house carved into a rock in the 1940s.

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

A hand-built folk art installation covered with messages of God's love.

The ghostly remains of an accidental sea.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

A Provincetown shop that sells exactly one thing — a pink cupcake — and whose owner fought the town for the right to keep selling it.

The trials and tribulations of marking Poe’s grave.

An old trolley bridge was converted into a breathtaking garden bursting with colorful flowers.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

No one really knows how these old hobby horses got here, but the herd keeps growing.

A local scoured more than 1,000 acres for stone to create his masterpiece.

This ancient Hawaiian henge may have been an early star chart.

A recreated Stonehenge stands in a country field, complete with Easter Island moai heads standing as sentries.

These elevated trucks were put in place as a middle finger to The Man, but are now considered folk art.

A collection of massive stacked rocks in Texas includes a snarky note on the benefits of modern technology.

The kind of mixed-up place that drives archaeologists crazy.