If you find yourself in Rotterdam, there's a strong chance you've arrived by water. This popular port city (the second largest in the Netherlands) has gone through an architectural renaissance since World War II, with daring, innovative structures dotting the city (cube houses!) and defining its skyline. Café culture is on the rise here, so grab yourself a table and a cup.

Lead’s Main Street reflects its long history with places that invite people to explore local life beyond mining. The Black Hills Mining Museum offers displays of mining tools, machinery and a simulated underground mine experience that brings to life how miners worked the Black Hills over generations. Along the same street, galleries, cafés and historic buildings make for pleasant stops between deeper dives into the past.

Xi’an, located in central China’s Shaanxi Province, served as the starting point of the ancient Silk Road and was the capital of 13 imperial dynasties. Its long history is most famously represented by the Terracotta Army, an underground army of life-sized warriors discovered in 1974. Each figure has distinct facial features, hairstyles, and armor, designed to protect Emperor Qin Shi Huang in the afterlife.

St. Thomas, the gateway to the U.S. Virgin Islands, is a vibrant mix of history, culture, and Caribbean charm. Its capital, Charlotte Amalie, features a waterfront lined with pastel-colored colonial buildings, narrow cobblestone streets, and historic forts such as Fort Christian, which offer glimpses into the island’s Danish colonial past.

Puebla is a state in east-central Mexico, stretching from the high volcanic plateau near Mexico City into the mountains and warmer valleys toward Veracruz and Oaxaca.