Gazebos can range from simple to quite elaborate and can even be finished as complete rooms with screens, windows, electricity for lights, ceiling fans, stereo, cable TV and telephones and plumbing to provide running water for a bar.
If built with natural wood products, a gazebo will require
maintenance to protect the wood and continue looking nice.
If left untreated to weather naturally, it will need occasional touch-up sanding and new coats of sealant, stain or paint every year or two, especially if exposed to extreme weather conditions.
-- Tips courtesy of HomeAdvisor.com