Experience the impressive gates of Fès, as they will provide a great view of the city, and also memories of keyhole-perspective pictures taken at these very places. Pass both ancient and recent ones, on a walk from Bab Mahrouk (13th Century) to Bab Chorfa (14th Centure) and Bab Boujeloud (20th Century), and do also take in the peculiarities of the Old Town.

While in Cologne, you can visit Germany's oldest city hall, with parts dating back to the 11th century. Over time, it has picked up a mix of styles—Gothic tower, Renaissance loggia, some modern touches. The 61-metre tower is covered in carved figures, including some cheeky ones from local history, and the bells chime four times a day. There’s also a mechanical face called the Platzjabbek that sticks its tongue out on the hour. Inside, the Hansasaal is the main historic hall—worth a look if it’s open.

A stay in Reims would not be complete without educating yourself about the famous sparkling nectar. Visit one of the many champagne houses based in Reims. Pay a visit to Pommery’s cellars that contain some of the most spectacular chalk carvings in the whole of champagne. Mumm is worth visiting too. The company has recently updated its tour and includes a museum area featuring old tools of the trade.