A lush green oasis in the middle of Chicago.

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

This botanical garden outside Chicago boasts an array of more than 300 varieties of lilacs.

Cold War missile launch site which has been converted to a public park.

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

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

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

This picturesque abandoned home is rumored to be a spite house.

A historic custom house with ties to George Washington is now a shrine to local nautical history.

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

The only one of New Hampshire's original 14 World War II watchtowers to survive in near-original condition.

Stumps of an Ice Age forest, visible only at low tide.

The massive machine creates cracking displays of indoor lightning.

A stone memorial erected for New Hampshire's only convicted witch.

A CT scan revealed the identity of this 3,000-year-old mummy that everyone erroneously thought was female.

This interpretive path lets you get up close and personal with dinosaur bones.

The fifth-longest natural arch in the world, and the longest outside China.

A giant open-air sculpture made of over 200 full-sized boats.

Shoot for par over the bodies of the dead on this cemetery-cum-golf course.

A winding path built in secret on the edge of the continent.

A modest reminder of treacherous waters at the Golden Gate.

A man-made island in scenic San Francisco Bay.

A storybook European village in Berkeley.