Editing Pergola (section)

===Green tunnels===
[[File:1949 - Salzburg - Mirabellgarten.JPG|thumb|150px|A green tunnel trained on modern materials, Mirabellgarten, [[Salzburg]]]]
Pergolas are more permanent architectural features than the [[green tunnel]]s of [[Late Middle Ages|late medieval]] and early [[Renaissance]] gardens that often were formed of springy [[Withy|withies]]—easily replaced [[Shoot (botany)|shoot]]s of [[willow]] or [[hazel]]—bound together at the heads to form a series of [[arch]]es, then loosely woven with long slats on which climbers were grown, to make a passage that was both cool, shaded, and moderately dry in a shower.

At the [[Medici villas|Medici villa]], [[Villa La Petraia|La Petraia]], inner and outer curving segments of such green walks, the forerunners of pergolas, give structure to the pattern that can be viewed from the long terrace above it.