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

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

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

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

There is an unmarked red button hidden over Houston's Buffalo Bayou that is just begging to pushed...

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

This "second" cemetery represents New Orleans' attempt to keep cholera at bay.

Lie in a hammock where George Washington stood.

A bit of retro transportation flair preserved in the world's largest department store.

A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Fantastic collection celebrating the final send-off.

A wunderkammer hidden on the top floor of the Hartford statehouse.

The unbelievably opulent home built for an infamous newspaperman.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.