Mexico City for first-timers: neighborhoods, markets, and the water question

Mexico City is one of the largest cities in the world, and the secret to loving it is refusing to treat it as one city. Pick a village-sized slice, live inside it, and make day-trips to the rest. Here's the playbook.

01Stay in the "walkable crescent"

Roma Norte, Condesa, and Juárez form a leafy, café-dense crescent where you can walk to almost everything that matters on a first trip. Coyoacán (Frida Kahlo's neighborhood) is a beautiful half-day south; Centro Histórico is for monuments, not for sleeping. Base yourself in the crescent and the city's scale stops being intimidating.

02Bottled water, yes — but the real tip is hydration math

Skip the tap (locals do too) — hotels provide garrafón water, and restaurants serve purified. The part nobody tells you: you're at 2,240 meters (7,350 ft) altitude. Between the elevation, the dry air, and the walking, you'll dehydrate faster than you expect, and the first-day headache most visitors blame on food is usually altitude plus dehydration. Drink double what feels normal, ease into the mezcal.

03Eat at markets, in this order

Start at a neighborhood mercado (San Juan for the adventurous, Medellín in Roma for everyday) with the same rule as anywhere: join the stall with the queue. Tacos al pastor are an evening food — the trompo needs all day to get right. A fonda's three-course comida corrida at lunch is the best food value in North America.

04Sundays belong to Reforma

Every Sunday morning, Paseo de la Reforma — the city's grandest avenue — closes to cars and fills with cyclists, runners, and families. Rent a bike from the free Ecobici stands or just walk it. It's the single best free experience in the city and the safest, calmest way to see its monuments.

05Use ride apps at night, cash by day

Uber and Didi are cheap, tracked, and the default for evenings. By day, the Metro costs pennies (keep your bag in front during rush hour) and many smaller spots — markets, street stalls, older cantinas — are cash-first. Small bills are gold; nobody loves breaking a 500-peso note for a 20-peso taco.