Plovdiv, one of the oldest continuously inhabited cities in Europe, carries over 8,000 years of history layered into its streets. The Roman Theater, still in use today, was discovered by accident in the 1970s and now hosts operas and concerts overlooking the Rhodope Mountains. Nearby, visitors can walk the remains of a Roman stadium buried beneath the main pedestrian street, where modern shops and cafés stand above ancient foundations.
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.
Most people visit Gallipoli for the chilling, contemplative sites of Anzac Cove and Lone Pine Cemetery. To honor the 500,000 soldiers who lost their lives at battle here, this peninsula was made into a National Park.
León, in northwest Spain, is a city where Roman, medieval, and modern layers coexist. Its historical heart features the León Cathedral with its remarkable stained glass, the Basilica of San Isidoro, and winding streets that hint at centuries of trade and culture.