A strange, heartwarming, decades-old declaration of love on a New Hampshire roadside.

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

The once-abandoned 140-year-old hotel used in the movie "In Dreams."

This historic mini-suspension bridge was swept away once but is now here to stay.

According to the experts at the Guinness World's Record office, this is the longest candy counter in the world.

One New Hampshire alleyway has become home to a public gallery of feline art.

Around 100 sculptures from artists all over the world decorate the hiking trails surrounding this locale.

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

Even Henry David Thoreau found this glacial pothole irresistible.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

"Try not to knock anything over!"

This "life-size" depiction of Mickey Mouse as a half-lobster is both whimsical and a bit creepy, standing guard over the Boston waterfront.

A monument to the first person to sail around the world solo, nowhere close to where he was born, set sail, or landed.

This tower commemorates the spot where George Washington hoisted the Grand Union flag.

This plaque commemorates the call between Alexander Graham Bell and Thomas A. Watson.

This memorial garden is the final resting place of many beloved pets including that of a famous explorer.

This Gothic castle was inspired by Erik the Red's Viking residence at Brattahlid in Greenland.

This museum dedicated to local history is housed in the state's oldest surviving fire station.

The sea urchin sculpture is an unusual commemoration of a New England town's seafaring history.

This art display in Dedham honors a local fish, and is dedicated to the volunteers who restored the canal.

This piece of peacetime naval wreckage memorializes the tragic sinking of the USS Maine--an event which sparked the Spanish-American war.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

A memorial sculpture to heath hens stands on the spot where the last heath hen, Booming Ben, was last seen.

The final resting place of a suffragist author.