The Uffizi.

Poorly laid out and presented, parlous queues, noisy group tours – it is nonetheless unmissable. The pickup office for reserved tickets is in the wing opposite the main entrance, but you may still need to queue, preferably with a takeaway hot choc from close by Rivoire (see Coffee). Piazzale degli Uffizi, 6 / Centro / 055 294 883 / 8.15am-6.50pm TueSun / best times to visit are lunch and late afternoon / uffizi.com