Historically, pergolas were used in the south of Italy to support grape-vines and arrange a shady rest corner in the patio; they were made in the form of a canopy or addition with benches and tables under them. The idea of the whole design was so successful that pergolas quickly became widespread throughout the continent, becoming an integral part of garden and park ensembles. The architecture of pergolas is diverse and depends on the overall compositional concept: it can be a simple wooden structure, richly decorated marble columns with a vault or a modern high-tech gazebo made of light metal partitions. The type of pergola is chosen based on its purpose: tent, partition, awning, tunnel, or canopy. Distinctive features of pergolas include repeating sections, supports, arc elements and lattice.