A pergola is a space forming way of pillars or a colonnade, typically covered with climbing plants such as wine or ivy.
Originally, it was a sun protection in the transition area between the house and terrace. Nowadays, a canopy between the house and garage is often referred to as a pergola.
Pergolas serve today to emphasize and to structure public or private open spaces as a freestanding physical structure or as a pergola transition. They are often used to delineate the private terrace. All pergola types have in common that they are half-open at the top, as opposed to an arbor or a shade roof.
As post material a fine masonry, a single elongated stone (monolith pergola) or wooden or metal support structures can be used. It is important to solidly fix the pergola foot to prevent a blow over or lifting of the pergola.
As a cover wood, metal or composite materials or combinations of materials are used. Depending on the arrangement the pergola is called a cassette or slats pergola.