This private residence was the template for one of the most beloved television homes of all time.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

In Midtown Atlanta, tons of marble appears to be devouring a Fiat Panda at this unique art installation.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Formerly the most gerrymandered district in the U.S., it twisted and turned along racial borders.

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

The Cadillac Ranch for monster truck aficionados.

A Nessie-like monster supposedly lurks in this lake.

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

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

Beautiful Gothic-inspired lighthouse stands out among the run-of-the-mill striped fare on Bodies Island.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

This nine-story building can be played like an instrument.

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

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

An echo chamber with a waterfall wrapped around its base at the Embassy of Canada in Washington, D.C.

An amazing example of early-20th-century architecture, this church features marble transported from Utah.

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.

An overlooked memorial honoring the local Washington residents who died in World War I.