Zócalo (Plaza de la Constitución), CDMX — Main Historic Square Walk + Flag Plaza + Landmark Surroundings (Free Access)

The Zócalo (Plaza de la Constitución) is Mexico City’s main central square in the Centro Histórico — the city’s “everything happens here” plaza, surrounded by headline landmarks like the Catedral Metropolitana and Palacio Nacional. There’s no ticket gate (public square), so you explore self-guided.

• Free self-guided access to Plaza de la Constitución (Zócalo) public space.

• Perfect for: first-time CDMX visitors, photographers, families, architecture/history lovers.
• Not ideal if you want a quiet spot (it’s the city’s main civic plaza).

• Walk the square, take photos, and use it as a base to explore nearby historic-center landmarks.

• Tickets / price (official): Free (public space).
• Location (official): Plaza de la Constitución S/N, Centro Histórico de la Cdad. de México, Centro.
• Opening hours (official): no attraction gate hours (public square; nearby venues have their own hours).

• Time needed: 30—90 minutes (longer if you pair it with nearby landmarks).
• Closest transit (official): Metro Zócalo/Tenochtitlán is nearby.

CDMX’s main square — totally free, best as your “start point” for the historic center.