Some mornings start with no instructions. You wake up and there's nothing written on the agenda, no alarm demanding your attention, no plan to follow. Just that strange feeling of having free time ahead, with no idea what to do in Madrid on a Sunday morning.
We rarely give ourselves that kind of room during the week. And sometimes, if we let it sit for a while, it turns into the perfect excuse to discover another side of the city.
Because Madrid, on Sunday mornings, changes its rhythm. The streets don't rush the way they do on weekdays. There's something almost silent about that slow wake-up, as if the city itself had stayed in bed a little longer too.
From wandering through El Rastro or strolling around El Retiro to letting yourself be surprised by an interactive experience at the Museum of Illusions Madrid, there are plenty of ways to fill a morning without needing to plan it too much.
When Madrid smells of El Rastro and vermouth
Some people find their perfect Sunday among street stalls. El Rastro opens early in the morning, and wandering its sloped streets feels a little like diving into the city's collective memory: antiques that once belonged to someone, vintage clothes that have already lived other lives, curious objects you're not quite sure what to do with, yet you'd still take home.
And then there's the ritual that follows. A few beers, a vermouth, some olives or tapas around La Latina, Cascorro or Las Vistillas.
You don't need to look for it too hard. The morning itself leads you there.
The green silence of the parks
Other Sundays call for the exact opposite: silence, fresh air, and an even slower pace.
El Retiro remains one of those plans that never fail. An unhurried walk, a stroll by the pond, or simply sitting for a while and watching the day begin.
If you're after something more hidden, El Capricho park keeps that secret-garden feel that makes it seem almost like it's outside Madrid.
And for those who'd rather keep moving, Madrid Río offers a long walk along the Manzanares that works just as well for clearing your head as for racking up kilometres without noticing.
A temple with a view before everything starts
Some corners of the city are enjoyed differently while it's still waking up.
The Temple of Debod is one of them.
Getting there in the morning, before the midday crowds arrive, lets you take in the views over Madrid's skyline and Casa de Campo at your own pace.
It's one of those places that invite you to stay a while without doing much at all.
And maybe also to arrive with your mind a little more open to whatever comes next.
A different plan for a Sunday morning
Because there are Sundays when, after so much walking, what you really want is for something to genuinely surprise you.
Walking into the Museum of Illusions Madrid is like stepping through a door that doesn't quite lead where you expected.
Inside, your eyes start playing tricks on you. There are optical illusions that fool the brain, rooms where proportions stop behaving the way they should, and spaces designed to make every photo look impossible.
In the Upside Down Room, all it takes is finding the right angle to end up walking on the ceiling or seemingly defying gravity.
And in the Vortex Tunnel, your eyes keep insisting everything's spinning, even though your feet know perfectly well the bridge isn't moving.
Between the laughter, the surprise, and that split second when your brain tries to make sense of what's happening, the morning starts heading somewhere else entirely.
An experience for all ages
Maybe that's part of its charm.
The museum doesn't need to explain the illusion before you experience it. It lets you be surprised first, and only afterwards try to work out what just happened.
That's why it works just as well for children as it does for adults.
The youngest visitors go with the flow from room to room, turning the visit, almost without noticing, into one of those things to do with kids in Madrid that grown-ups enjoy just as much.
Among friends, every space turns into an impossible photo or the perfect excuse for a good laugh, making it one of those plans with friends in Madrid people still talk about afterwards.
And you don't need to be an expert in perception, physics or optics, either.
You just need to want to look twice.
A plan that fits the rest of your Sunday
On top of that, the Museum of Illusions sits right in the centre of Madrid, at Calle Doctor Cortezo, 8, next to Tirso de Molina and just a short walk from Puerta del Sol and Plaza Mayor.
Which means it doesn't have to be the only plan of the morning.
You can start there and carry on towards Plaza Mayor, La Latina and El Rastro. Or do it the other way round: lose yourself among stalls and terraces first, and end up walking into a place where nothing seems to be quite where it should be.
And if Sunday dawns rainy, cold or too hot, it also becomes one of those indoor plans that let you keep enjoying Madrid without depending on the weather.
When Sunday turns out better than expected
In the end, between flea markets, parks, temples with a view and rooms where perspective bends out of shape, Madrid offers plenty of ways to fill a Sunday morning.
But maybe the best thing about these days is precisely not trying to fill them too much.
Leaving a gap.
To walk without a destination. To sit for a while. To discover something you hadn't planned for.
Because that Sunday which started with no plan at all, with nothing written on the agenda, might just end up being the one you don't forget.