Eaves are the lower edges of a roof that overhang the walls of a building. They serve several purposes, including protecting the walls from rainwater and directing water away from the foundation. Eaves can also provide shade and help with ventilation in the attic space. There are different styles of eaves, such as closed eaves, which are flush with the wall, and open eaves, which are exposed and often feature decorative elements. Properly designed eaves can enhance the aesthetic appeal of a structure while also contributing to its durability and energy efficiency.