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

A dedication plaque on this Boston tunnel is a microcosm of a massive, controversy-laden construction project.

What may be Boston's finest Art Deco building, located in the city's Financial District.

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

This headstone marks the grave of an 11-year-old boy killed during clashes in the streets over the boycotting of British goods.

Two thousand artifacts from around the world collected by one woman who loved to travel.

This mosaic commemorates the oldest subway tunnel and station in the United States.

A men’s restroom became a sandwich shop.

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.

A pair of antique trolleys are on display at one of the oldest subway stations in the United States.

American revolutionaries and British soldiers alike are buried here in the fourth-ever cemetery in Boston.

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

The Boston square dedicated to the dark poet who was born nearby.

The bench featured in the film with Robin Williams and Matt Damon has become a popular destination for moviegoers.

This historic sculpture from the 16th century is even older than the city of Boston.

Statue commemorating the use of ether in anesthesia.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The Boston home of a conductor on the Underground Railroad.

Former home of an abolitionist couple who escaped slavery and established the most active Underground Railroad stop in Boston.

This faux Greek Revival mansion is a clever optical illusion tucked into a Beacon Hill alley.

A plaque marking the famous abolitionist's birthplace often overlooked by visitors to the nearby Charles Sumner House.

In the 19th century, this was the center of Boston's Black community.

Historic home of a Black veteran of the American Revolution and one of the earliest civil rights activists in the United States.