Panoramic views of the city of New Haven and the Long Island Sound, with a side of history.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

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

An abandoned Depression-era zoo hidden just off the highway.

The world's largest egg has been cracked a number of times over the years but has been repeatedly replaced.

A geological mystery on Camelback Mountain.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The wreckage of a deadly bomber plane crash can still be found near an Arizona peak.

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

10,000 flowered plants bloom in the City of Roses.

It would take 35 firetrucks to fill this enormous glacial pothole.

This stone tower marks a lookout point over the historic Washington Crossing, and maybe some buried treasure.

The only road through the heart of Glacier National Park.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

This sprawling bookstore spans four floors and has more than a million books in stock.

Step inside Lucy, the world's largest "elephant."

Books you don’t need in a place you can’t find.

There aren't too many operational funiculars around, but Pittsburgh has two!

A vertically floating hemlock controls the waves and weather at Crater Lake.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

When you can't get to the Pacific, just go to Florida.

Wall to wall taxidermy at Denver's oldest and most exotic steakhouse.