It is one of the oddities of modern Europe that Alsace belongs to France. Historically, culturally and linguistically, the region has had more in common with its German neighbour to the east of the Rhine. Alsace is a hybrid.

The Alsatians are descendants of the Teutonic tribes who settled here in the fifth century. In the Middle Ages most of the region, along with a chunk of Switzerland, formed part of the German duchy of Swabia, which owed allegiance to the Holy Roman Empire. Two of the imperial families, the Hohenstaufen and the Habsburgs, had their principal domains in the region, on both sides of the Rhine. The major cities – Strasbourg, Colmar and Freiburg – were among the greatest of the independent free cities of the Rhineland, the economic powerhouse of transalpine Europe.

Only in relatively recent history has the Upper Rhine become a disputed border between antagonistic powers. In the Middle Ages and for long after the river was not a divisive factor but a unifying highway, the meeting place for goods, peoples and ideas from both sides. The acquisition by France in 1648 of the left bank – modern-day Alsace – paid no heed to linguistic, religious or cultural considerations. Indeed, it reverted to the German Empire for 47 years after the Franco-Prussian war of 1871.

This tour ignores modern national boundaries. This way the immensely rich artistic and cultural heritage can be fully appreciated, and stylistic variations be seen as regional inflections rather than national differences.

A leitmotif of the tour is the exceptionally rich collection of late mediaeval altarpieces. Alsace is also rich in mediaeval church architecture, both Romanesque and Gothic.