The U.S. Navy's last diesel-electric submarine rests half-submerged in the middle of Portland.

The magic's in the hole!

A medical facility that has been kept frozen in time.

Prone to disastrous fires, the city of San Francisco has the Guardian, a fireboat gifted by residents, to watch over them from the bay.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

A crumbling hospital from the 1850s on Roosevelt Island.

This impressive Boston holy house is the American mecca for Christian scientists.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

These whimsical works of art tell the story of the city's past and present.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

An architectural oddity of six stories, accessed by graceful ramps.

Featuring the the longest lift span of any vertical-lift bridge in the world.

This evocative New Jersey statue memoralizes the Polish victims of a Soviet massacre.

Filled with history, this cemetery is maintained each summer by a few hungry goats.

Amazingly, this old machine within the Resorts Casino still functions.

On the Hudson resides one of the largest clocks in the world.

Memorial built in 1922 in remembrance of WWI casualties.

A bronze plaque at an intersection in Hoboken marks the place where the game of baseball first took shape.

A playground inspired by differential calculus dangles from the ceiling of the Liberty Science Center.

Vintage cars and motorcycles race for glory in a throwback motorsport celebration on the Jersey shore.

World Trade Center memorial likened to a woman's sexual organ.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

This unassuming retro burger joint was billed as “diner of the future” at the 1939 World's Fair.