These beautiful garden buildings are among the oldest surviving greenhouses in the United States.

It's a repurposed treasure trove of history, located just an hour away from Acadia National Park.

A black sand beach where glacial fragments wash ashore and look like sparkling diamonds.

Life-size bronzes of the Grinch, Cat in the Hat, Yertle the Turtle, Sam-I-Am, and the Lorax—and the author himself.

A museum dedicated to the quirky and colorful world created by Springfield's favorite son.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

A monument to the winner of the 1946 Boston Marathon, Greek runner Stylianos Kyriakides.

This sculpture is dedicated to a local therapy dog who later became the official mascot of the 126th Boston Marathon.

A grave surprise in the downtown area of New England's second-largest city.

The Burnside Fountain and its questionable interpretation.

The former home of a Boston physician whose murder led to a revolution in forensic science.

Dedicated to a colonial woman who was hanged for being a Quaker.

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

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

An architectural statement of artistic intent smack in the middle of Providence, Rhode Island's Colonial uniformity.

A stone marker dedicated to the “Father of American Education.”

A historic bridge no one is allowed to cross.

In the middle of a busy airport, a statue honoring the astronaut who told Houston that Apollo 13 had a problem.

The oldest continuously occupied public building in the United States.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

A sprawling collection of over 106,000 toys from around the world.

This giant pocket watch is the third iteration of a local landmark that has been standing just off the Santa Fe Plaza for over 100 years.

A little slice of Florida face-in-a-hole kitsch, unexpectedly located in a small New Mexico town.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.