I was only stopping through on a day trip from Paris, but I would love to go on a slightly longer sojourn to the sleepy town. Two or three days would be perfect. Not only is it on the doorstep to the vineyards of Champagne, including those of Moet & Chandon and Verve Clicquot, but it is also full of historically significant buildings, perfect for a history buff.
Visit what is considered the most perfect Gothic cathedral in the world, the Cathedrale Notre-Dame de Reims. Spot the single smiling angel on the facade and the Gallery of Kings, a flank of statues of the kings who were crowned there, including King Clovis, the first king of France. The cathedral was built in 1211 on the site of an even older church, and despite being almost completely destroyed in World War I, has been fully restored. It is known for its beautiful stained glass windows, including the large rose window on the western-facing front, dedicated to the Virgin Mary.
The day we were there, it was quiet deserted until one by one, classic cars pulled up outside the cathedral. Reims hosts a number of classic car rallies, and it was an interesting sight to see a row of classic cars lined up at the foot of the towering cathedral.