Xochimilco, just south of Mexico City, is most useful to visit by renting a colorful trajinera for about 1 to 2 hours so you can cruise the canals and see the chinampas up close. Go on a weekday or early in the morning if you want a quieter trip, and always agree the hourly price and what it includes before you board; pay vendors and musicians in cash and tip the boat crew. Bring sunscreen, a hat, insect repellent and a water bottle, keep your valuables secured while on the boat, and use the light rail from Tasqueña or a trusted rideshare to get there. Expect lively vendors and music, avoid drinking the canal water, and be respectful of the fragile floating gardens if you go ashore.