Since it’s already nearly noon, head straight to Café de Tacuba for lunch around 12:15. The historic dining room is part of the pleasure; allow about an hour and budget MXN 250–450 per person. Then walk roughly 5–10 minutes northeast to Templo Mayor. Give the site and museum about 1½ hours, but keep an eye on the clock: it’s normally open Tuesday–Sunday until 5 pm, and Sunday afternoons can feel compressed. Admission is usually around MXN 100 for international visitors; check the official listing for current rates and entry rules.
Walk back to the Metropolitan Cathedral on the north side of the plaza for a 30–45-minute look inside, then spend about half an hour taking in the scale of the Zócalo and its surrounding buildings. From there, Palacio de Bellas Artes is an easy 15–20-minute walk west along pedestrian-friendly streets. Aim to arrive by about 4:30; the museum galleries typically close at 6 pm on Sundays, though entry may stop earlier. If time is short, admire the ornate exterior and lobby rather than rushing through the galleries. Keep belongings close in the busy plaza, and expect security or crowds to affect access.
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