Serrat de les Torres

Serrat de les Torres is a modest but historically significant ridge in Martorell, a town in Catalonia's Baix Llobregat region. Also known locally as Serra de les Torretes, this hillcrest rises above Martorell's old town, which was built in terraces directly on its slopes. At the top stand the ruins of a medieval watchtower, Torre Grimenella, officially recognised as a Catalan cultural asset of national interest (BCIN).

What is Serrat de les Torres?

The name refers to the ridge that once carried a pair of watchtowers guarding the approach to the valley below. The remains of one of them are still visible today: a square structure built from courses of limestone blocks interspersed with red sandstone. This two-tone masonry is the ruin's most distinctive feature and is noticeable even from a distance.

What is the history behind the tower?

Researchers trace the origins of the two towers on Serra de les Torretes back to the Roman period, since the wider Martorell area preserves several traces of Roman-era settlement in this part of Baix Llobregat. During the Middle Ages, the ridge's commanding position above the town led to its reuse for defence: the tower served as a lookout point, allowing the valley below to be monitored and any threat to be signalled in advance. The very shape of Martorell — a town built in terraces up the hillside — is a direct result of this defensive role the terrain once played.

Why is it worth a visit?

Serrat de les Torres appeals to visitors who enjoy combining landscape with history, away from the crowds. The ridge offers a wide view over Martorell and the surrounding Baix Llobregat valley, and even though the tower ruins are modest in scale, they make it easy to picture centuries of watch kept over this stretch of countryside. It pairs well with a visit to Martorell's historic centre, best known for its medieval bridge, the Pont del Diable, spanning the Llobregat river.

Martorell itself sits at the confluence of the Llobregat and Anoia rivers and has long served as a key communication point between the Catalan coast and the interior — precisely the kind of strategic crossing that made watchtowers like the one on Serrat de les Torres necessary in the first place.

What should you know before visiting?

Martorell's local tourism office has incorporated the hill into a signposted walking route, the Ruta de les Torretes, which leads through the area linked to the town's historic watchtowers. This shows that local authorities actively present the site as part of a promoted heritage trail rather than a forgotten ruin.

Frequently Asked Questions

What is Serrat de les Torres? It is a ridge above Martorell topped by the ruins of Torre Grimenella, a medieval watchtower recognised as a cultural asset of national interest.

How old is the tower on Serrat de les Torres? Its origins may go back to Roman times, while the defensive structure visible today dates from the medieval period, when the tower kept watch over the valley.

What can visitors see on site? The ruins of a square tower built from limestone and red sandstone, along with panoramic views over Martorell and the Baix Llobregat valley.

Is Serrat de les Torres part of a marked tourist route? Yes, it forms part of the Ruta de les Torretes, a walking route designated by the town of Martorell dedicated to its historic watchtowers.