The terminal houses the Mitchell Gallery of Flight (a non-profit museum) and a USO room on the concession level, along with the usual retail outlets, including a small food court and a branch of Renaissance Books which is believed to be the world's first used book store in an airport. There are play areas for children throughout the facility. An observation lot along the northern edge of the airport is open to the public and tower communications are rebroadcast using a low-power FM transmitter for visitors to tune in on their car radios. There is also a new lot on 6th Street, with a Wisconsin historical marker giving the airport's history.