The tennis legend used this racket while breaking the race barrier and becoming the first Black man to win the US Open.

The place where Samuel "Slater the Traitor" brought the Industrial Revolution to America.

Monasteries on rock pillars, once accessible only by frayed ropes.

The hallucinogenic center of the ancient world.

An ancient octagonal weather station named for the eight Greek gods of wind.

Public water fountains built during the Ottoman Era still stand throughout this seaside town.

Built by the Ancient Greeks, this chariot bridge is still in use today.

This legendary city has been a tourist attraction for centuries.

This slumbering beast honors the Bavarian soldiers who died in Greece during a 19th-century typhoid outbreak.

This 15th-century island fortress later served as home to the executioners no one wanted to live near.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

Explore the world's largest collection of locks, keys, handcuffs, and ornate hardware, and crack the code on an antique-filled escape room.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones’ locker.

A total of 14 men held the title of "president" before George Washington—their historical legacies are enshrined in the lobby of a hotel.

Many of the most significant figures in American history once hopped on a stagecoach in this alleyway on their way to more noteworthy destinations.

A long strip of fossil-filled limestone makes up this natural bridge above a rushing stream.

Mountain where Jesus was first tempted by the Devil.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

This unique rock formation is quite the local celebrity, although one day it may come crashing down.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

Where three rails and three centuries of transportation meet.

American artist J. Alden Weir purchased this 60-acre estate for $10 and a painting.