A museum dedicated to the alleged Roswell Incident.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A massive volcanic plug is now a protected area that hosts a number of bird species.

Home to a forest of whimsical pygmy Coast live oak.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.

This large chunk of dark rock is a relic from an ancient volcanic eruption.

The oldest alley in San Francisco is paved with a reminder of the city's original shoreline.

One of several Lilliputian portals that are ready to transport passengers to other dimensions, if they can find them.

An ordinary lamppost situated in the middle of Cambridge has an unusual moniker and history.

A Wild West saloon that helped define a generation of psychedelic rock.

A former mining hospital is now a vibrant artistic hub.

The oldest hotel in Nevada.

Unopened beer cans are left at this monument to honor the Navy men who lost their lives during a training mission.

This former New Jersey bus now exists as a public art exhibit.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

Colorful outcrops and cliffs just north of Reno provide a scenic backdrop for hiking and mountain biking.

This giant slab of driftwood marks the beginning of the Winnemucca to the Sea Highway.

Ruins of the original wooden flume that carried water to Virginia City are still visible high on the Virginia Range.

Home to an apple tree that can produce 25 different varieties of fruit.

A volcanic cone that formed over 600 years ago.

California's largest steel arch bridge.

A ruined hotel with an unlucky history and an eerie present.

This hidden amusement park is a magical escape for kids and kids-at-heart.