A semi-scholarly approach to sex.

Elevated freight railway turned wildly successful urban park.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

This popular Boston haunt is reminiscent of a time gone by, when slow cafes and sweet-smelling smoke wafting from patios was the norm.

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

The location of one of the first private Catholic schools in the country, providing a valuable sanctuary during the tumultuous period when Protestant and Catholic students were at odds.

Each August, one of the largest religious (and food) celebrations in the country is held in Boston.

This area was once known for being a lawless haven for rough-and-tumble sailors, earning the maritime-themed nickname "the black sea."

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

Narrowest house in Boston.

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

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

The infamous Boston Mob ran rackets from an office here in the 1970s.

The first bell ever cast in Boston was cast by Paul Revere...and sounded terrible.

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

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 massive tea kettle was once a promotional stunt for the Oriental Teashop.

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

"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."

Trash escaped from a landfill to fill beaches with all kinds of treasure.

Hill-like structures formed by glaciers and sandy spits of land.

MIT students continue the legacy of beloved professor "Doc" Edgerton through learning by doing.