These are simply a series of arches designed to provide a covered walkway. But now these are often used in a shortened form over a patio to give privacy and summer shade in addition to extra height and a place for climbing plants.

Pergolas are free-standing, whereas loggias make use of a high wall on one side to support each arch. It's possible to grow plants at the foot of each section, either directly into the soil, or in large planters. If the arches are high enough, it's also possible to suspend baskets of flowers from the overhead sections to add colour and interest.