The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

When it opened during the final years of the embargo, all the drinks and cigars were free.

A rotating cast of guys and dolls in front of a Washington, D.C. building.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

The only place for a truly presidential dram.

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

At 207 feet, one of the world's longest continuous escalators.

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

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

Before Nixon, "watergate" meant canals.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

This grand gothic brewery has been pumping out suds for over a hundred years.

Home to items never before seen by the public.

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

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

This simple convenience store sits on the location where the Ouija board was named—and has a plaque to prove it.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

A tribute to Ponce de Leon's supposed quest for eternal youth.

Arrr! The most authentic collection of pirate artifacts in the world... matey.