Museum celebrating the ocean, with the largest wunderkammer dedicated to sea exploration.

The world's highest and most dangerous infinity pool lies at the precipice of Victoria Falls.

There is only one place in the world where the corners of four nations come together.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

This garden houses the remains of the ancient Greek port of Marseille.

This saucy statue once caused outrage among locals.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

The highest point in Washington state is a volcano covered in glaciers.

A tunnel with windows, so you don't miss out on the impressive views.

This supermarket is suspended 25 feet above an interstate highway.

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

A gift to the children of Boston, this bronze bear represents playfulness, a spirit of love, and the warmth of big hugs.

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

A beacon atop a downtown building provides Bostonians with weather forecasts and baseball news.

Ice cream stand, snack bar, and time capsule of milk conveyance.

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

Dim sum, served in a grand old theater.

Lie in a hammock where George Washington stood.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Elevated freight railway turned wildly successful urban park.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

The summit Roosevelt conquered before he descended to become The Chief.