The 20-mile causeway that separates the Netherlands from the sea.

This is Bremen’s oldest historic district, famous for its labyrinth of narrow medieval alleys lined with tiny, colorful 15th-century houses that resemble beads on a rope.

A stunning gilt bronze relief denounced by Hitler as "degenerate art"—even though it was dedicated to the Nazi leader.

A botanical hideaway sits inside the ruins of a half-built Civil War fort.

This was the first ever National Lakeshore, established in 1966.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

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

This sculpture dedicated to a pioneering labor unionist and civil rights activist is located inside a busy Boston train station.

This Dutch-styled residential building was originally a cocoa company's World's Fair showpiece.

This replica of a historic fishing shack long dubbed the most painted building in America.

This steep slide at a kids’ playground went viral after an police officer tumbled down it.

A bronze sculpture in the heart of Portland represents Maine’s most defining industry.

The New Bedford Whaling Museum in Massachusetts displays what it calls the world's largest ship model.

The first transatlantic wireless communication between the U.S. and Europe took place here in 1903.

Royals, rebels, and artists have all conversed at this grand 19th-century Viennese coffee house.

This windmill has been grinding pigments for traditional paints for more than 200 years.

A statue honors the genius who allegedly first took a meatball and made it into a hamburger.

The statue of a cursed knight is said to come to life every 100 years.

The largest living museum in the Northeast recreates life from the Early Republic period complete with costumed historians and reenactors.

Works from the golden age of Mexican muralism can be found inside a typical city market.

Built in France in the 1400s, this gothic chapel now resides at Marquette University in Milwaukee, Wisconsin.

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

On a former island, this old fortification once used to protect the Boston Area and started Edgar Allan Poe in his military career.