Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

A mysterious painting of the self-declared Emperor of the United States watches over a local hof-brau.

A pair of mutilated bronze octopuses slump at the base of the monument honoring California's admission to the U.S.

The blinking light atop the iconic landmark has been sending secret messages for decades.

An ominous concrete cube cuts a dystopian silhouette atop this California mountain.

An expansive and intricately restored mansion remains from over a century ago--and so do its ghosts.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

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

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

The space-age building is home to one of the few remaining rotating restaurants in America, and the only one that inspired a 1980s sitcom.

Outposts of this restaurant chain were shaped like jaunty chapeaus.

These once-beautiful historic graveyards are set against the barren Virginia City hills.

Before it was abandoned and left to rust alongside the road, this riverboat starred in a John Wayne movie.

A tree grown from astronaut seeds which were exposed to cosmic rays.

The Empire Mine is "one of the oldest, largest, deepest, longest and richest gold mines in California."

This Fifth Avenue church has long been the favored worshiping place of Broadway actors and vaudeville performers.

The island residents are known for taking their quirky sense of humor with them to the grave.

Recovered from the brink of extinction, at home in the Financial District.

A creepy steel gremlin has protected the Bay Bridge since 1989.

This dormant volcanic crater has been converted from a roiling pit of magma to a pleasant hiking spot.

A brooding mansion of clinker brick stands out among the Victorian houses of Pacific Heights.

Hidden in the back of a disused small town hotel is a dive bar shellacked with over a million pennies.

The headquarters of a secretive order is also a beautifully-designed park.