The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

An ode to one of the first concerts broadcast via satellite.

A glass display case holds the document that ended the Second World War—which one person signed on the wrong line.

Inside, visitors are treated to the rich history of sugar farming and its impact on Hawaiian society.

A tunnel of hardened lava along Maui’s famous Road to Hana.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

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

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

An ode to the friendship between four Pacific Rim countries.

The freeway that never was.

San Diego's most historic and haunted home.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

An exotic wildlife habitat right off The Strip.

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

Before becoming a public park, this spot was a shell midden, a fort, and an amusement park.

The world-record holder for the longest bridge stretching continuously over water.

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.

Once defending the city of New Orleans from invasion by sea, this fort faces an uncertain future.