This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

The site of one of history's most indelible and horrific tragedies.

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

A beacon atop a downtown building provides Bostonians with weather forecasts and baseball news.

This headstone marks the grave of an 11-year-old boy killed during clashes in the streets over the boycotting of British goods.

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

What was once a true peninsula has now been filled in, causing the water to recede and leaving many streetside "waterfronts" and landlocked "islands."

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

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

Millions of numbers carved in glass represent the tattoos forced upon victims.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

Dedicated to one of the darkest moments in Irish history, this memorial has faced its fair share of backlash.

What may be Boston's finest Art Deco building, located in the city's Financial District.

This graceful little figure is a one-of-a-kind version of the cherished character.

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

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.

One of two lighted lanterns hung in the church belfry on the eve of the Revolutionary War to warn that the British were on their way.

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

The poems Nathaniel Hawthorne and his wife Sophia etched into its windows are still visible today.

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

"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."

Site of a famous 19th-century transcendentalist utopian community, now abandoned.

The sprawling, eccentric estate of Ames and Ames, a brilliant botanist, and a genius inventor and artist.

Located just behind a quiet residential neighborhood, this is ground zero for the Salem witchcraft hysteria of 1692.