A remnant of the original World Trade Center complex continues to serve as a commuter gateway.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

The oldest active church in Pennsylvania is also the second oldest Swedish Church in the United States.

One of the world's oldest continually operating bookstores.

George Washington, Alexander Hamilton, and Benjamin Franklin all slept at this humble inn.

In use from 1742 to 1910, only flat headstones were allowed in this cemetery.

The oldest working bell set in North America, the bells at Old North Church sat silent for their first four years in Massachusetts.

One of the indelible moments of the American Revolution took place at this location.

Historic Hull Street was actually the first street with a proper name in the Boston area.

This mysterious artificial cave has long puzzled New Englanders.

This ambitious father and son team reigned supreme over the North End, and witches, for many years.

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

These whimsical works of art tell the story of the city's past and present.

This landmark cemetery in Boston was created more than 300 years ago.

The former locus of Boston's high culture has been shuttered and buried for over 70 years.

America's original house of worship for Spiritualism, the religious movement based on communing with the dead.

Life-size bronzes of the Grinch, Cat in the Hat, Yertle the Turtle, Sam-I-Am, and the Lorax—and the author himself.

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

A museum dedicated to the quirky and colorful world created by Springfield's favorite son.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

No one really knows how these old hobby horses got here, but the herd keeps growing.

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

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

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