Visit Knoxville says Knox County residents can enjoy free local Sunsphere days from May through October.

Those with a physical copy of their Knox County driver’s license can visit the observation deck on the fourth floor for free on the following dates:

May 2

June 6

August 1

September 5

October 3

Officials with Visit Knoxville say the observation deck allows up to 40 people every 30 minutes, meaning space is limited and admission is on a first come, first serve basis. Because of this, it will be open an hour later, until 6 p.m., for an additional hour of enjoyment.

The Sunsphere was built for the 1982 World’s Fair and offers a stunning 360-degree view of downtown Knoxville, the Great Smoky Mountains, World’s Fair Park, the Tennessee River, and the University of Tennessee.

It also has a timeline, gallery, memorabilia, a newly painted mural, and technology related to the World’s Fair.