Explore the elegant portuguese fishing town of aveiro at leisure on this must do city sightseeing hop on hop off bus tour as you travel around town in an open top double decker bus create your own itinerary hopping off whenever you like see aveiros hard hitting sights such as the central canal lined by candy colored houses as well as mercado do peixe the towns bustling fish market simply hop on and off at the eleven stops around town for 24 hours of independent sightseeing