The world's largest piece of copyrighted artwork.

A wall of chewing gum moonlights as collective art.

This grand old 80-foot sequoia towers above the buildings in the city’s retail center.

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

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

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

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

This nearly endless university hallway is home to a unique sunset known as "MIThenge."

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

This impressive Boston holy house is the American mecca for Christian scientists.

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

Come for the gun-toting hillbilly madman, stay for the ice-cream loving basketball bears.

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

Murder scene memorialized in perpetuity by grisly obelisk.

Every December the Wannalancit Mills lights a Christmas Tree over the old mill's smokestack.

Supposed Massachusetts Grave of a pre-Columbus Knight Templar.

This mural celebrates the early integration of a New Hampshire baseball team.

A former zoo turned public park, where visitors can hang out in the old animal cages.

Once the future of underwater combat, this old sub is now open for visitors to muck around in.

The 92-foot-tall structure is based on the aircraft that carried the first Americans into space.

One of the first intercontinental ballistic missile sites in the United States.