Abandoned Italianate architecture on the coast of Maine.

The only remaining historic maritime signal station in the United States.

Explore the dark underground corridors of this graffiti-covered former military fortification.

In a pedestrian tunnel on North Carolina State’s campus resides an expressive and artistic free-for-all.

A replica of where the Last Supper was held.

A once-groundbreaking power plant turned into a hotel and mini-museum of archeological and geological wonders.

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

This eclectic sculpture garden in Brooklyn, home to a bizarre collection of art, was once a run-down junkyard.

Along a California highway is a kind of Jurassic Park made of metal.

Discover for yourself what Herb Caen referred to as "the best kept secret in the Bay Area."

An out-of-place Air Force radar dome is all that denotes this park as a former missile launch site.

Survival capsules find a second life as a unique hotel.

A house carved into a rock in the 1940s.

Once a thriving business district, this former shopping area is now an urban ghost town in the heart of the city.

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.

A historic cemetery filled with quirky faux wood art and unique tombstones.

One of the only memorials dedicated to journalists who died in combat.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

This ruined quarry once produced the distinctive red sandstone used for construction projects in Washington, D.C.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

A remarkable time capsule of American manufacturing deep in Maryland coal country.

Two dozen pinball games hidden away inside a most unlikely location.

An abandoned church gets a second life as a massive beer hall and event space.