Verona is everything Venice isn't: walkable without a map, affordable, uncrowded, with the best-preserved Roman arena in Italy hosting summer opera.
Venezia Santa Lucia โ Verona Porta Nuova. Just over an hour, from โฌ9.90. Station is 15 min walk from the Arena.
Slightly slower, no booking needed.
Fast train, 1 hour, from โฌ9.90. Essential day trip from Venice or perfect overnight stop.