RS TENSILE PVT. LTD. in DELHI, INDIA A gazebo is a freestanding, open garden structure, sometimes hexagonal or octagonal in shape, with a roof. Most gazebos are constructed of tensile fabric or metal and have ​built-in seating inside the sheltered area. To add a sense of enclosure and privacy, latticework or outdoor curtains or drapes are sometimes used. They have a built in floor and may be screened, curtained or closed in so they protect occupants from the elements during outdoor social gatherings. Some are attached to a garden wall but mostly are freestanding.