One of the world's most definitive collections of musical instruments, spanning all cultures and historical periods.

A wonderland of caves in eastern Iowa.

Dedicated to the humanitarian efforts of the state's former governor.

More than 7,000 gallons of water pour over these cascading red quartzite waterfalls every second.

Once a slice of Cold War-era military history, this museum is finding its future in the star.

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

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

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.

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

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

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

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

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

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

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

A three-piece musical sculpture installed between the subway tracks at Kendall Station near MIT.

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

Impossibly life-like natural history models created out of glass by a father and son.

Three prestigious academic collections come together to create a world-class natural history museum.

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

This bronze sculpture was inspired by a photograph of Martin Luther King Jr. and his wife embracing after he won the Nobel Peace Prize.

Created by a local artist, these quirky sculptures each have their own names and personalities.

This unassuming stone commemorates a condiment factory gone up in smoke.