Chartres Cathedral, an hour and a half train-journey outside Paris, was well worth the rainy-day effort. It is one of the best examples of French Gothic architecture - something I have been wanting to see in person for years. The spires dwarf the surrounding town, the stained glass is never-ending and each facade is adorned with hundreds of sculpted figures. So many art history tidbitties. It was art history heaven.
Mom and I braved the wind and rain to explore an entire facade, and would then retreat into a cafe for tea. Next facade, scuttle back for more tea. Repeat.
There is also a labyrinth on the floor of the nave. Which pilgrims still walk. A pretty cool place.