This woodland architectural installation acts as a camera obscura for the heavens.

This research center for rare prosimians is studying how they sleep to help prolong human life.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

A beautiful Victorian-era cemetery, complete with a miniature village.

A eclectic collection of military memorabilia.

This once rural mansion now sits in the heart of the city.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

The first bell ever cast in Boston was cast by Paul Revere...and sounded terrible.

This museum explores the lives of Chang and Eng, the "Original Siamese Twins."

This North Carolina grave is the final resting place of the world's most famous conjoined twins.

Andy Griffith's hometown has made itself up to look like the fictional town of Mayberry.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

This lookout tower built in the 1930s is now an in-demand cabin with what might be the best view of the Seneca State Forest.

This abandoned amusement park was built on a site with a dark history.

Ghost stories surrounded this “castle,” the only structure from a huge mansion that was never built.

A real flying saucer, contracted by the U.S. Air Force.

The angel of death appears to weep black tears at this grave marker.

The largest outdoor art gallery in the Northwest United States.

A small section of Boise, Idaho maintains the unique culture and traditions of the Basque people.

See just what life was like in a 19th-century prospecting town.

Tucked away on a scenic trail, a modest memorial honors one of the greatest writers of our time.

This trail leads to a mine that was used as a sanctuary during the Great Fire of 1910.

These black pillars of volcanic basalt seem to call mountain climbers with an unbreakable siren song.