Once the future of underwater combat, this old sub is now open for visitors to muck around in.

The childhood home of the Sultan of Swat is just a line drive away from Oriole Park at Camden Yards.

New York City's smallest piece of private property.

Elevated freight railway turned wildly successful urban park.

The "Seinfeld" diner.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

This opera house along the banks of the Connecticut River has two Tony Awards to its credit but it’s never staged a single opera.

British troops and Prohibition couldn’t stop this spot from becoming one of the United States' oldest continuously-run taverns.

This small-town pizzeria won the Hollywood lottery.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

This lighthouse was witness to the end of WWII hostilities and now collects creepy cairns.

Ironically this massive termite is the mascot for a company that is acclaimed for killing his kind.

A giant green dragon crawls down from the roof of the Providence Children's Museum.

Rhode Island's tallest building bears a resemblance to the "Daily Planet" building and has been empty for more than five years.

An architectural statement of artistic intent smack in the middle of Providence, Rhode Island's Colonial uniformity.

An unusual library of dead things at the Rhode Island School of Design.

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

The vaguely man-shaped root that ate the body of the founder of Rhode Island.

To avoid the demolition costs this abandoned drawbridge was simply left in the up position.

Some big-name visitors have patronized this small-town library named for an oil man's daughter.

Once a kitschy symbol for a gift shop, this 38-foot seahorse is now a staple roadside attraction.

An eccentric inventor's castle home with its own indoor weather system.

This unassuming stone commemorates a condiment factory gone up in smoke.

The massive machine creates cracking displays of indoor lightning.