Experience the best of san antonio on a city sightseeing hop on hop off sightseeing tour board an open top double decker bus at any of the 12 stops around the city and enjoy recorded commentary about san antonios history culture architecture and arts visit san fernando cathedral see hemisfair parks tower of the americas explore the alamo and spend time shopping and browsing galleries at the rivercenter mall along the river walk choose a 24 or 48 hour ticket giving you flexibility to