The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

Portlandia is the second-largest copper repoussé statue in the United States.

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

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

The "Seinfeld" diner.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

The trials and tribulations of marking Poe's grave.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

A music-filled, booze-soaked oasis in the desert.

A fake town founded by Western movie stars is now becoming a hip desert community.

The Hopi-style structure was built by the man who discovered Desert Hot Springs' famous mineral water.

The masses at this church incorporate enough moonshine and animal sacrifice that they are no longer recognizably Catholic.

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.

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

A line of blue paint marks the route of the inaugural parade.

Look closely and you’ll notice that the color changes a third of the way up the tower.

An obscure federal monument honors the French diplomat who served as Ambassador to the U.S. during WWI.

A small token of gratitude from freezing cold journalists who were given a warm haven while covering JFK's inauguration.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.