Pennsylvania offers more than just a glimpse into American history, it invites travelers to walk through it. In Philadelphia, the Liberty Bell still draws visitors from around the world, while Independence Hall, a UNESCO World Heritage Site, is where both the Declaration of Independence and the U.S. Constitution were debated and signed. Just a short walk away, modern museums like the National Constitution Center offer hands-on exhibits that connect the past to today’s civic questions.

Potosí rises on the Altiplano of southern Bolivia and for centuries it was one of the richest cities in the world because of what lies just beyond its streets. At the foot of Cerro Rico (“Rich Mountain”), silver was discovered in the mid-1500s, and within a few decades the city became a center of mining and wealth that shaped global trade and economies.

Huangshan, also known as the Yellow Mountains, is one of China’s most iconic and culturally significant mountain landscapes.

Carcassonne is a fortified city in southern France, rising above the Aude River with walls and towers that feel lifted from another century. Its origins stretch back to Roman times, but the city is best known for its medieval citadel, rebuilt and expanded during the Middle Ages when Carcassonne became a strategic stronghold on key trade and military routes.

This Sicily harbor city is divided from Italy proper by the Strait of Messina. Visitors marvel at the Gothic, bell-towered Norman Messina Cathedral.