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

From economic backbone of a community to deadly diving hole, these former stone quarries are now a park for rock climbers and graffiti artists.

This giant Boston statue of Mary is standing on a globe to show her power over the universe.

One woman’s obsession gave birth to this lovely oddity at the Boston Public Library.

A mysterious stone embedded at the base of a historic Boston building.

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

The self-proclaimed world's smallest museum, located next to a Massachusetts sandwich chain.

This cemetery served as the only official burial grounds in Cambridge for nearly 200 years.

Rising 30 feet in the air atop Quarry Hill, the Old Powder House is the oldest stone building in the state of Massachusetts.

This former Masonic hall has been turned into an art project that uses even more metaphysical iconography.

A historic bridge with a lovely acoustic anomaly.

Run by a eugenics advocate, this aging institution conducted secret radiation experiments sponsored by Quaker Oats.

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

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

This Boston medical museum features the skull of the famous medical case of Phineas Gage.