Reichenau is an island rich in vegetation, but unlike Mainau, it features vegetables, not flowers. In fact, 15% of its area (the island is 5 km [3 miles] long and 1½ km [1 mile] wide) is covered by greenhouses and crops of one kind or another. It also has three of Europe's most beautiful Romanesque churches, a legacy of Reichenau's past as a monastic center in the early Middle Ages. The churches are in each of the island's
villages—Oberzell, Mittelzell, and Niederzell, which are separated by only 1 km (½ mile). Along the shore are pleasant pathways for walking or biking.