Low-angle shot of Sagrada Familia with clear blue sky, tourists visible, Barcelona tour bus in foreground

sagrada familia barcelona spain gothic architecture antoni gaudi basilica church landmark tourism blue sky clear day lowangle shot tour bus travel destination iconic spires facade european history cultural heritage masterpiece unfinished religious building stone carving city exploration sightseeing catalonian landmark architectural wonder sunny day christian monument historical intricate design european travel urban tourism famous church spanish attraction religious tourism gothic style majestic european city landmark visit architectural beauty tall spires visit barcelona city tour public transport opentop bus tourist attraction unesco world heritage site