Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

The walls of the iconic dome are hollow and have a secret stairway.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

A haunting tribute to pioneering photographer Clover Adams.

The house where John Wilkes Booth conspired with his co-conspirators.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

The most accurate timepiece in the world.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

This grand gothic brewery has been pumping out suds for over a hundred years.

A celebration of capitalism in Midtown.

A modernist landscape of water and sci-fi concrete.

Giftshop catering to cryptozoologists and anyone with a sense of humor.

The site of the climactic scene from the classic horror film is now a historic landmark.

The titular fictional logger only inhabits this otherwise historically focussed museum via a piece of fiberglass kitsch.

A museum celebrating the self-taught artist-environment builder.

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

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.