1. Torreta Griminella and Torreta del Clos

Make your way to Carrer de la Muntanya in Martorell and start following it upwards. When it becomes a track, head into the Serra de les Torretes (literally, “Small Watchtowers Range”, named after the structures that stand there), passing by an old water mine. Follow the path until you reach a plain where, on the right, you’ll see a narrow track leading first to the Torreta Griminella and then to the Torreta del Clos. These small square watchtowers, which offered a commanding view of the Via Augusta where it crossed the Pont del Diable (Devil's Bridge), are thought to date from Roman times. Today, at an elevation of 219 metres, the sites afford a wonderful view of Montserrat and part of the Baix Llobregat region.

2. Burriac Castle

The last few metres are a bit steeper, but otherwise, reaching the summit of Burriac Hill, where a mediaeval castle stands, is an easy hike among vegetation typical of the coastal ranges. The shortest path is from Cabrera de Mar, but you can also start the climb in other places, such as Font Picant, a natural spring in Argentona. At the top, you’ll see why the Iberians (specifically, the Laietani, in this part of the world), used to climb this 400-metre hill to watch over an extensive area.

3. Claramunt Castle

From the centre of Pobla de Claramunt, the hike to this border castle, perched at an elevation of 453 metres above sea level, is just over one kilometre and perfectly straightforward. There are even benches to sit on along the way! This is one of the best-preserved of the many castles in the Anoia region, having been thoroughly restored a few years ago. You can visit the interior and it offers magnificent views of the Òdena Basin and Montserrat. So just grab your water bottle and hiking boots!

4. Puig d’Olorda

Lastly, we'd like to suggest a route through Collserola Natural Park to reach the summit of Puig d’Olorda (at an elevation of 436 metres), a peak also known as La Creu (The Cross), since it’s crowned by a large cross, as well as a fire watchtower. An easy route is to start from Castellciuró Castle, in the municipality of Molins de Rei, where parking is available. From there, follow the route of about eight kilometres that passes by places including the Castle and Chapel of Santa Creu d'Olorda and the Pedrera dels Ocells (Birds' Quarry).

• In Sant Llorenç del Munt i l'Obac Natural Park, peaks such as El Montcau or La Mola are also straightforward!
• Please maintain a respectful and considerate attitude towards nature when you visit natural parks.