Prado Museum: free entry hours every day
The Museo del Prado holds Spain's national collection of European painting, built largely from four centuries of royal acquisitions. Velázquez's Las Meninas, Goya's Third of May 1808 and El Greco's altarpieces all hang in the same building, a five-minute walk from Atocha.
Free admission runs the last two hours before closing on every day the Prado opens: 6pm to 8pm Monday to Saturday, 5pm to 7pm on Sundays and public holidays.
There's no reservation system for it. Visitors queue at the ticket office, tickets are issued on the spot, and once the rooms reach capacity the museum stops letting people in until someone leaves. Arriving right as the free window opens doesn't guarantee entry: the queue is often long, sometimes running into hundreds of people, and arriving at least 45 to 60 minutes early can really make the difference between getting in and not.
Access closes 30 minutes before the museum does, and staff start clearing rooms ten minutes before that, so a 6pm arrival realistically buys under two hours, not two. The cloakroom fills fast right afterwards, worth knowing if arriving with a coat or a bag too large for the lockers.
Under-18s, students aged 18 to 25, the unemployed, teachers, large families and visitors with a disability rating of 33% or higher get in free at any hour, with ID shown at the ticket office.
Reina Sofía Museum: how to reserve a free entry ticket
The Reina Sofía holds Spain's 20th- and 21st-century collection, including Picasso's Guernica, alongside major holdings of Dalí and Miró, inside a former 18th-century hospital extended by Jean Nouvel in 2005.
Free admission runs Monday and Wednesday to Saturday, from 7pm to 9pm, and Sunday afternoons from 12.30pm to 2.30pm. The museum is closed on Tuesdays.
Unlike the other two, the Reina Sofía requires a ticket even during the free hours, though it can be reserved online in advance, and doing so is worth the small effort: turning up without one during the free window means the possibility of finding no slots left for the day.
That still makes it the more forgiving option compared with the Prado's queue-and-see approach, but the free online slots fill up fast, especially on Sunday afternoons and around Friday and Saturday evenings. Booking online a day or two ahead is almost a necessity.
Under-18s, over-65s, students up to 25 (and older students in Fine Arts, Conservation, History or Art History), teachers, journalists, the unemployed and holders of a disability rating of 33% or higher get in free at any time, with a valid ID shown at the desk.
Thyssen-Bornemisza Museum: free entry hours
The Thyssen-Bornemisza holds a private collection assembled over two generations, spanning the 13th to the 20th century, from Duccio and Van Eyck to Hopper.
Free entry comes in three separate forms, and they don't work the same way.
Every Monday from midday to 4pm, Mastercard sponsors free access to the permanent collection, and no ticket is issued at all: the ticket office is closed during that window and visitors walk straight in.
Every Saturday from 9pm to 11pm, Uber sponsors "Thyssen Nights," covering whatever temporary exhibition is showing on the ground floor and level -1, or the Carmen Thyssen collection if nothing temporary is on.
The Monday window is the only one of the three with zero ticketing friction anywhere in Madrid's free-museum landscape, which is also why it draws a real crowd by early afternoon despite the museum being otherwise closed on Mondays.
Customers of Fundación Mutua Madrileña holding a "Soy Madrid" card can bring one guest in free any day of the week. Under-18s, the unemployed and visitors with a disability rating of 33% or higher have free entry at any time, and the Thyssen's website lists several more categories that qualify for free or reduced tickets.
How to see two museums for free on a Monday, and why not three
Mondays look like the perfect chance to see all three museums for free in a day. It's the one day the Thyssen breaks from its usual Tuesday-to-Sunday hours, opening midday to 4pm for free, a window that doesn't clash with anything else on the calendar. So far, so good.
The evening is where the plan comes undone. The Prado's free hours run 6 to 8pm, the Reina Sofía's 7 to 9pm, and the two overlap almost entirely. Walk out of the Prado at 7.45pm and head straight for the Reina Sofía, and there's maybe half an hour left before the doors close, enough to stand in front of Guernica, not enough to see a 20th-century collection that size.
Two museums, not three, is what a Monday actually delivers: we honestly recommend the Thyssen at midday, unhurried, followed by either the Prado or the Reina Sofía that evening.
Header image credits: Pablo Picasso: Guernica © Museo Reina Sofía.
