30th Jacksonville Model Train and Railroadiana Show: Jacksonville, Florida. Sponsored by Golden Spike Enterprises, Inc. at the Prime Osborn Convention Center, located at 1000 Water Street (former Jacksonville Union Terminal Co. site) in downtown Jacksonville. Over 325 tables and 35,000 square feet of show space. This is Jacksonville’s oldest and largest model train and railroadiana show. 9 am – 4 pm. Admission $7.00 (children 12 and under are free). Large operating layout. Free parking.