Freiburg was founded by the Dukes of Zähringen in 1120, and the layout of streets and squares of the rapidly prospering metropolis is still impressively reflected in today's cityscape.

Leiden or Leyden, city in the western Netherlands, in Zuid-Holland (South Holland) Province, on the Old Rhine River, near The Hague. Leiden is also the site of the State University of Leiden, one of the oldest and most distinguished universities in Europe. It was the birthplace of several important Dutch painters, including Rembrandt, Jan van Goyen, and Jan Steen. During the 17th century the English settlers who became known as the Pilgrims took refuge in Leiden before leaving for North America.

Located on the north coast of Morocco near the Strait of Gibraltar, Tangier is a cultural capital replete with historic sites, colorful architecture, and splendid beaches. An essential stop is the Ancien Medina, a walled collection of winding streets and alleys filled with cafes and shops leading to the Kasbah, a former palace and mosque that also houses a museum.

Eskişehir, located in northwestern Turkey, is a city where old meets new in unexpected ways. Known for its youthful vibe due to its two major universities, the city is also deeply rooted in history. It sits along the Porsuk River, which winds through lively neighborhoods and parks. The riverfront, once mostly industrial, has been transformed into a place where gondolas pass under bridges and locals gather at riverside cafes.

Luxembourg City, the capital of the Grand Duchy of Luxembourg, is a stunning blend of medieval charm and modern sophistication. Perched atop dramatic cliffs and surrounded by deep gorges, this city offers a unique and breathtaking landscape. The UNESCO-listed Old Town is an essential starting point for visitors, with its ancient fortifications, narrow cobblestone streets, and grand squares.