A grave surprise in the downtown area of New England's second-largest city.

The only surviving building of historic West Boylston, which was flooded to create the Wachusett Reservoir.

Once the largest gravity dam in the world.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

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

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

The celebrated eyesore created by starry-eyed sweethearts.

What looks like a normal building is really a hollow facade hiding a subway vent.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

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

The narrowest street in Paris.

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

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

Hundreds of personalized inscribed planks make up this historic boardwalk.

Ghost town with a beer-drinking goat for mayor.

This lakeside tower is the third attempt at getting a tourist destination to stick on the spot.

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

This mountain tram provides stunning views while hanging from a single, steel thread.

This Cape Cod museum exhibits what it claims is the only authenticated pirate treasure in the world.

A serene plaza that commemorates one of the Granite State's most iconic figures.

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.

The first bell ever cast in Boston was cast by Paul Revere...and sounded terrible.