Italy
Florence holds a sumptuous medieval fireworks festival, the 'explosion of the cart', in piazza del Duomo on Easter Sunday. Almost all museums are open (except on Monday when they tend to close anyway), and there's some of the best open-air sightseeing in Europe, with the piazza della Signoria, Ponte Vecchio and piazzale Michelangelo to visit. Most bars and restaurants have terraces or put tables out (many have canopies in case of rain too!).
It's usually warm to very warm spring weather. You can fly direct to Florence from Gatwick with Meridiana or to Pisa (one hour train ride) from Bristol with Easyjet. Both flights are around two hours.
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