Pergolas and gazebos are outdoor structures that can enhance your garden but have distinct differences. A pergola is an open-air structure with vertical posts supporting cross beams and an open lattice roof. It provides partial shade and is ideal for defining spaces and supporting climbing plants. On the other hand, a gazebo has a solid top and is fully enclosed with walls, offering complete protection from the elements. Gazebos often have a more defined and enclosed space, making them suitable for use as outdoor rooms or for events. The choice between a pergola and a gazebo depends on your specific needs, style preferences, and desired level of shelter.