Tickets, passes and saving money
Paid Barcelona sorts itself with one rule: book ahead whatever sells out, compare passes only if you'll visit three big things, and distrust queues that money skips.
What always gets booked
The Sagrada Família without discussion, Park Güell in season and the night visits of the modernist houses. Everything else has a day of margin or improvises at the booth without drama.
Combined passes: the arithmetic
Museum and transport passes only pay off with three or more dense visits: sum your real prices before buying. Well-chosen single tickets almost always win.
Free and first-rate
The Bunkers, the viewpoints, the facades of the discord block, the Boqueria early, churches at worship hours and half the modern city seen from the street: Barcelona's best list costs nothing.