A shop on the outskirts of the Old Market in Omaha, Nebraska. The main floor(s) have a bunch of used books for sale. In the back you can play chess with some of the regulars. Other regulars hang out in the front and discuss. In the basement is a record store that also sells used cd's and videos. Upstairs is an art gallery. Among others, they have featured the art of Bill Farmer (deceased). Bands have also played up there before, but it really is not a music venue.
A scene from "Omaha, The Movie" also took place in the antiquarium. Overall, one of the coolest places in Omaha when I was growing up there.