This local gem houses the largest collection of pre-Raphaelite paintings outside of the U.K.

WWII-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers. .

A grotesque Fiji merman dwells within this traditional Dutch-style building.

A blend of art, antiquities, and Americana fill this museum, surrounded by whimsical, enchanting gardens.

This splendid Versailles-inspired mansion has the largest French-style formal gardens in North America.

Nature and beauty amidst pollution and industrial wreckage.

A way to take your secrets to someone else's grave.

This historic building housed the surviving crew members of the Titanic, who were left destitute after the wreck.

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

This demon atop the Notre-Dame de Paris looks utterly bored.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

The famed amusement district marks the beginning of summer with a wild procession of nautical creatures.

New York's southernmost subway station is whimsically wavy.

The flagship building of an early national restaurant chain is a superb example of terra cotta art.

Waterway populated with abandoned projects, including a submarine.

This small, hidden cove is home to abandoned boats.

The celebrated eyesore created by starry-eyed sweethearts.

The video game-themed street art first popped up in the French city.

An abandoned subway tunnel that could have reinvigorated Staten Island still lies somewhere beneath this Brooklyn park.

A working monastery hidden away in Brooklyn once abutted the location of a former inebriate's home.

Brooklyn's Barkaloo Cemetery is the resting place of a scant two bodies.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

This bridge was constructed from the rubble of the infamous Bastille.