Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

This tiny, painted door at the base of a tree stump has been a fixture of the Harvard University campus for decades.

Impossibly life-like natural history models created out of glass by a father and son.

Narrowest house in Boston.

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

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

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

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

This small section of the Sleepy Hollow Cemetery is rotten with famous authors' graves.

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

Three prestigious academic collections come together to create a world-class natural history museum.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

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

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

Two thousand artifacts from around the world collected by one woman who loved to travel.

A beautiful Victorian-era cemetery, complete with a miniature village.

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