Four steel monoliths stand in the Qatari desert, in a breathtaking work of large-scale art by Richard Serra.

One of the few remaining monuments dedicated to South Boston's Irish heritage.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

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

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

This historic patch of real estate offers a glimpse of colonial Boston.

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

A men’s restroom became a sandwich shop.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

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

The massive machine creates cracking displays of indoor lightning.

The site of Paul Revere's historic two lantern warning.

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

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

Radical Bookstore and Community Space.

Dim sum, served in a grand old theater.

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

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

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

An enormous, inside-out glass globe built in 1935.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

Surrounded by low rise buildings and partially converted into an auto body shop, this marble archway is the only vestige of a forgotten Manhattan estate.

The best way to get a sneak peek at the movies.

The famous facade of Grand Central Terminal hides a regulation tennis court, and it's not the first one.