A parking structure for vehicles comprising a plurality of substantially level parking floors having a plurality of parking spaces on each floor. A ramp system is provided for access between floors comprising ramp sections extending between adjacent floors arranged to define a continuous path from the bottom to the top floor within the parking structure that does not involve travelling among the parking spaces on each floor. The end of one ramp section is spaced apart from the start of the next ramp section at each floor to define an entrance to and an exit from the ramp system.