A Venice day trip is easily done by train from Milan (2h 25m), Florence (2h), Bologna (1h 30m), Rome (3h 45m), or Lake Garda (1h 20m to 1h 40m from Peschiera or Desenzano). All trains arrive at Venezia Santa Lucia station, right on the Grand Canal. Step off the platform and you are already in Venice. The key to a successful day trip is arriving early. Catch a train that gets you in by 9 AM and you will have a solid 8 to 10 hours before the last evening departures. Start with vaporetto Line 1 down the Grand Canal (the best introduction to the city), then walk the San Marco circuit: the basilica, Doge's Palace, the Campanile, and the waterfront. From there, head to Rialto on foot through the winding calli, stopping for cicchetti and a spritz near the bridge. After lunch, choose between Dorsoduro (art museums and the Accademia Bridge panorama) or a loop through quieter Cannaregio. Venice charges a day visitor access contribution (currently 5 EUR on designated peak days, bookable online in advance). Check the calendar before your visit because the fee applies on specific dates, typically weekends and holidays between April and July. Exemptions include children under 14, residents of the Veneto region, and those with hotel reservations in Venice. A 24-hour vaporetto pass (25 EUR) is the smartest transport investment for a day trip. Buy it at the ACTV booth in the station or through the Venezia Unica app. If you are driving, park at Tronchetto (the parking island near Piazzale Roma) or the mainland garages in Mestre and take the train or People Mover into the city.