Where is the boulevard ticket office located?

Where is the boulevard ticket office located?
Do they have tickets dispenser machines to pick up the tickets i have ordered from Ticketmaster?

If using ticketmaster (La Caixa) then the best and by far the easiest way of collecting tickets is to print them at a 'La Caixa' cash machine. Only certain ones offer this facility, but there is one just near Burger King on Las Ramblas that prints tickets.