Papaver rhoeas
Georgetown has a notable range of Victorian commercial and residential architecture. In 1976, a local historic ordinance was passed to recognize and protect the significance of the historic central business district. In 1977, the Williamson County Courthouse Historical District, containing some 46 contributing structures, was listed on the National Register of Historic Places. Georgetown is also known as the "Red Poppy" Capital of Texas for the red poppy "(Papaver rhoeas)" wildflowers planted throughout the city. Georgetown's Red Poppy Festival, which attracts up to 30,000 visitors annually, is held in April each year on the historic square.