The Amiens Cathedral, a WHS in its own right, is also part of this Route in France. I wasn't aware of that when I visited. Thanks to Klaus Freisinger (see visitor reviews below) for pointing that out!

My second visit to this elaborate WHS also involved a site inscribed twice: the city center of Bordeaux. Three of its medieval churches are on the Route to Compostela. We visited Saint-Seurin and St. Andre Cathedral. Especially the latter is one of the highlights of Bordeaux. The Route is also widely displayed around Bordeaux, so I guess it receives numerous pilgrims although we didn't see any.

After a third visit, I now think that I safely can tick this one. This time I went to the Tower of Saint-Jacques in Paris. As this is the starting point for the routes across France, this is a major site among the 78. The richly decorated tower can be seen from afar, but there's nothing left of the 16th-century church. The site is located a bit north of the Seine banks. Although it looks in pretty good shape, I was surprised to find no pilgrims here. There's also no way to get in. I just had to make do with a stroll around it, there's a small garden where you can sit and enjoy the view.

Basilica Saint Sernin in Toulouse was my 4th visit. An enormous building in a scruffy neighbourhood, surrounded by a cheap market on the Sunday morning that I visited it. I even had to search for the entrance and found it at the church's highlight: the Porte Miegeville.