To save time and energy and see a lot of Barcelona, take the "Bus Turistic". For 20 Euros for a day (adult) and 12 Eusos for a child, the double-decker bus is the most convenient way to go. Tours are conducted daily except on Christmas Day and New Year's Day. There are 3 routes and a total of 44 stops. They start the tour at 9 AM. Tickets can be purchased on line, Information office of Turisme Barcelona or on the bus. An information book on the stops is given when a ticket is purchased. The routes are even color-coded so it is easy for the tourist to make plans. You can stay in one area as much as you like and then hop on the next bus to another destination at your leisure. My husband and I thoroughly enjoyed touring the city this way. We were staying at an apartment outside the city limits but we had more time to see the city by using the double decker tourist's bus.