Established in 1638 to battle the Black Death, this botanical garden is a treasure trove of rare flora.

A beautifully eclectic mix of architectural styles.

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

A unique work of automotive art calls this shopping center home.

This unattributed sculpture in Amsterdam is hiding in plain sight.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

The largest collection of historic military firearms in the United States.

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

Stolen goods adorn the organ at Old North Church.

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

Silverware in the sidewalk outside a grocery store cements this neighborhood’s Italian culinary history.

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

No one messes with the Massachusetts sacred cod, not this time...

Dedicated to one of the darkest moments in Irish history.

A statue honoring 44 continuous years of greeting passing ships.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

Oldest existing wire suspension bridge in the United States.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Take a step into the workshop where Edison and his employees revolutionized the world.

City law dictates that this mountaintop cathedral containing the heart of a saint is to remain the tallest building in town.

Every year, the colorful murals of Montreal get a complete makeover.