A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

"X" marks the spot of an echo chamber in the middle of a plaza.

The first public building in Savannah to offer air conditioning was a luxurious cinema that still operates today.

A statue honoring 44 continuous years of greeting passing ships.

137 graves holding New England's earliest residents.

The headquarters of the famous Yale society.

FDR's Art Deco hospital tower was hopelessly inefficient.

Every drop of D.C. tap water flows through this old waterworks.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

This church built atop a gas station promises to "equip you for the next stage in your life’s journey."

A Yale University president wears full samurai garb in one of America’s oldest cemeteries.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

It looks like a whale, it's part of Yale, and it's best-known by a nickname you can probably work out for yourself.

A pink and gray pair of pachyderms advertise a fireworks shop.

Charleston's historic city jail once held everyone from pirates to Civil War POWs.

The "last unrestored grand mansion of Savannah" is now a cramped, mouldering maze of antiques.

Tucked away inside a historic Savannah hotel is a hundred-year history presented in ladies' lids.

Before Metro, Washington had a robust streetcar network—and you see the remains of this infrastructure if you know where to look.

The site of the climactic scene from the classic horror film is now a historic landmark.

The United States Capitol's former columns still stand.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

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