No one really knows how these old hobby horses got here, but the herd keeps growing.

Small caves once used as a hiding place for some of those accused during the Salem Witch Trials.

A historic bridge with a lovely acoustic anomaly.

One man is on a singular quest to name an island after a famous hip-hop artist.

"Mock all and sundry things, but leave the saints alone."

One man's psychedelic fence is painted with his cacophonous folk art musings on the world.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

This is the house that spite built.

One of Philadelphia's largest murals resides hidden under this bridge.

It's not a typo, now say it five times fast!

This small-town Connecticut restaurant gives each diner a free book from its vast library.

This "life-size" depiction of Mickey Mouse as a half-lobster is both whimsical and a bit creepy, standing guard over the Boston waterfront.

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

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

From bench to vandalism to art, this silly prank seat was funny enough to become permanent.

These whimsical works of art tell the story of the city's past and present.

Narrowest house in Boston.

Beautiful steampunk ghosts of early Massachusetts.

The bears may be gone, but their old cages can still be found.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

The massive machine creates cracking displays of indoor lightning.

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

One of the now-less-hidden floral gems of the "Emerald Necklace."

Museum dedicated to awful artwork.