Mértola by motorhome, from the Guadiana up to the castle

Our return to Mértola began with a poor night’s sleep, water heated in a saucepan for coffee, and a castle waiting at the top of the hill… our legs got the message before we did. It had been hot in Édouard, our motorhome, the phone hadn’t charged overnight, but we were still happy to be out exploring together.

Visiting Mértola in Portugal, for us, meant leaving the motorhome behind, wandering between whitewashed houses, walking down towards the Guadiana, then climbing back up to the church and castle. Caroline was livestreaming and I was taking photos, so there were plenty of stops (handy when you need to catch your breath, too).

We had visited this small town in the Alentejo, in Beja district, before our big road trip. This return visit was in August 2024. Here’s the walk we actually did, with our photos, the original vlog and a few pointers for planning your own stop.

Our walk in Mértola on video

Our original French-language vlog follows the detours, climbs and running commentary. Caroline is filming while I take photos nearby, so you can see the walk as it happened. The practical information and our account of the visit are in English below.

In Mértola, the alleys gave us a workout

On the map, everything looks close together. On foot, there’s a passage heading downhill, steps taking you back up, then a lane you follow just to see where it goes… and suddenly you’ve done a workout you never booked. We were already joking about that on the livestream, Mértola was doing a perfectly good job of keeping us moving.

I liked having time for the small details, too. White walls, a doorway, bougainvillea, then a gap between two houses with the river back in view. I had brought my Lumix S5, so yes, the walk was always going to take a little longer. Caroline films, I take photos, we each have our excuse to stop.

Some lanes were very quiet when we passed through. It would be easy to describe Mértola as deserted, except there were more people around the cafés and bars a little further on. It changed from street to street, which suited a slow wander very nicely.

We also stopped to photograph the sign and façade of the Cine-Teatro Marques Duque de Mértola. Looking into it afterwards, we found that a chapel once stood here before being replaced by the theatre in 1917. Archaeologists have also found older burials in the area, there’s quite a lot beneath those streets. The archaeological site details these discoveries.

The Guadiana views made us stop again

Sometimes a viewpoint is quite enough of a plan. You look across the rooftops, see the Guadiana below, and stay there a bit longer. We enjoyed getting down towards the river as well, finding shade where we could and taking our time.

Mértola stands above the Guadiana and its Oeiras tributary. The setting helps explain its history: the Guadiana was a trading route and Mértola an important inland port. Looking down from the upper town, you can see why this position mattered. The Campo Arqueológico explains that trading history.

The small catch with walking down to the water is having to climb back up. That’s when the castle at the top starts to look a little further away than it did in the photograph. I’d plan those ups and downs for a cooler part of the day, with water and comfortable, secure footwear, especially in summer.

Mértola’s parish church, with its former mosque still visible

We call it a cathedral a little too casually in the vlog, so let’s put that right: the Igreja Matriz de Nossa Senhora da Anunciação is Mértola’s parish church. It stands just below the castle, and there’s more to it than another pretty whitewashed building.

The building served as a mosque in the 12th century and returned to Christian worship in 1238. Work begun in 1532 added the vaults and main entrance. The Mértola Museum explains those changes, which explain why the building looks different from many of the churches you’ll see on a Portuguese road trip.

The mihrab preserved in the church, the niche indicating the direction of Mecca, survives from its time as a mosque, as do the old doorways with horseshoe arches. Look out for the mihrab if you go inside. Our own walk focused on the outside and the views, so this isn’t an account of a full interior visit.

Mértola Castle, at the top of our walk

After the river and the lanes, we headed back up towards the castle. There are views along the way, then the rooftops, river and hills open up again from the upper town… we kept stopping, even when we’d only just stopped a little further down.

The Castelo de Mértola and its keep deserve a better description than our rather loose reference to a ruined castle on the livestream. Fortified walls and a substantial keep survive; an inscription on the tower dates it to 1292, during the time of the Order of Santiago. The official VisitPortugal page describes the castle and provides visitor information.

For us, the setting above the town was the main draw. If you want to include the museum displays, check their opening arrangements with the museum. We left ourselves time for the views and a wander around the upper town, which made a good walk without fitting in every interior.

Our dinner in Mértola, and the €46 we talked about the next day

We’d arrived late the previous day, tired and ready for dinner. We went back to a small restaurant we already knew, where the menu had moved towards tapas-style dishes. Caroline was still talking about it the following day: homemade food, a very enjoyable meal and a bill we were happy with.

The total we mention in the vlog is 46 € for the two of us, including food, drinks and desserts. That was our actual bill in August 2024, paid in euros in Portugal, rather than a current set-menu price. We correct ourselves while listing the drinks on camera, so I won’t try to reconstruct an itemised receipt from the conversation.

Our photos show the earthenware dishes, fish with peppers and dessert, although we can’t reliably name each recipe. You’ll often see the Portuguese word petiscos for small dishes to nibble and share, useful to recognise when you’re looking through a menu.

What stayed with us was sitting down to a good dinner after the drive. We still need to confirm the restaurant’s name before giving you a specific recommendation, but the meal itself is there in the vlog and the photographs (we clearly remembered to photograph dessert).

Visiting Mértola by motorhome: leave the old lanes to your feet

One piece of advice we can give without hesitation: keep your motorhome outside the old town. Those narrow lanes make a lovely walk and an unappealing prospect in a large vehicle. We’ve had the cold sweats wondering whether we’ll fit through somewhere before, no need to make it part of this visit.

Look for parking that suits your vehicle’s dimensions before reaching the historic centre, then walk in. Check signs, gradients, turning space and overhead clearance, including anything on your roof. An app pin is a starting point, I’d still look at the approach before driving down it.

The heat had made itself known before we set off

We visited in high summer, and the hot night in the motorhome had rather set the scene. That’s our experience of this particular stay, rather than a temperature record. For a walk with these climbs, I’d choose early morning or late afternoon and fit any indoor visits around their opening hours.

The weather panel below lets you compare the seasons and check the forecast before setting off. Our own plan was fairly simple: coffee first, shade whenever we found it, then keep walking.

If your Alentejo road trip continues towards the Atlantic, our Vila Nova de Milfontes guide has a very different setting. For another inland stop, have a look at our Évora guide. Plan these as separate stages of the journey, rather than additions to this walk around Mértola.

PS: the castle above and the river below look lovely in the photos. Our calves have their own record of the bit in between.