The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

The proud hometown of an American legend has honored their favorite son with what seems to be a gravestone.

An 18th-century townhouse that once hosted guests of the president.

Dedicated to the man who created the first radio wave communication system.

The story behind this beloved toy—named for Theodore Roosevelt and owned by his grandson—is more complicated than you might guess.

Coins and medals straight from the mint await visitors to this shop in the nation's capital.

A replica of the famous memorial statue at the Normandy American Cemetery hides in an office building in downtown D.C.

The word "Watergate" will forever be associated with the infamous scandal in 1972, but this fountain is famous in its own right.

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

The first memorial dedicated solely to the Black troops who fought for the Union.

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

A fantastic array of trays and cables once whisked books over to the Capitol at 600 feet per minute.

Where the U.S. government kept its actual treasure, before Fort Knox.

Decades before the scandal, this staircase on the river was a literal "water gate."

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

The upstairs reading room is packed with millions of rare books, literary manuscripts, and historical treasures.

One of the three perfect vellum copies of this historic book known to exist is on display in a specially-designed case.

A homage to the King at the hotel where he revived his career.

One of New Jersey's oldest surviving buildings still bears the mark of our former British overlords.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

The second building of its name to occupy this location might be the finest flatiron building in San Francisco.