Molí del Grau

Molí del Grau is a former water-powered flour mill on the outskirts of l'Aleixar, a small village in the Baix Camp county of Tarragona province, Catalonia. Long out of use, the mill is included in the municipality's heritage trail dedicated to its historic flour mills, and its old function is still easy to read from what remains standing.

Where is it and how do you get there?

The mill sits in the farmland surrounding l'Aleixar, a short drive from Reus and close to the main roads linking Baix Camp with the rest of the province. Like the other stops on the village's mill trail, it was built next to a stream that once fed its waterwheel — a common pattern here, where mills line the seasonal watercourses (rieres) flowing down from the surrounding hills. The easiest approach is by car to l'Aleixar, then a short stretch on foot or by bike along local farm tracks. It's worth checking with the town hall beforehand about current signposting, since some mills on the trail sit on private or hard-to-reach land.

What will you actually see?

Molí del Grau is really two neighbouring structures rather than one. The first, known as Molí Nou del Grau (the "new" mill), is the more recently built of the two, and next to it survives a square stone water basin, roughly two metres across, where water once dropped onto the wheel housed beneath the building. Right beside it stand the remains of the older building, Molí Vell del Grau, of which a good part of the ground floor is still standing, including a vaulted ceiling built with a cane-lattice technique once common in the region's rural architecture.

Looking at both buildings side by side, it's easy to picture how the system worked: a weir and canal channelled stream water into a holding pond, which fed a sloped chute onto a wooden wheel — typically one to one-and-a-half metres across — turning a pair of millstones, one fixed and one rotating, that ground wheat into flour between them. As in many mills of this kind, the miller's family would usually have lived right next to the milling room.

What's the history behind it?

Water mills were the backbone of the local economy across this part of Catalonia for centuries, harnessing the streams flowing down from the hills instead of relying on animal or human muscle. Industrialisation and newer milling technology gradually made them obsolete, and many, Molí del Grau among them, were eventually abandoned. The fact that two distinct building phases survive on the same plot — an older mill and a visibly more modern one right beside it — suggests the site was rebuilt and upgraded at some point before milling finally stopped here.

When is the best time to visit?

Spring and autumn are the most comfortable seasons, when temperatures in Baix Camp are mild and the surrounding fields and hills look their best — ideal conditions for walking or cycling the full mill trail. Summers here can get quite hot, particularly around midday, so an early-morning visit is the more sensible option if you're coming in July or August.

Frequently asked questions

Can you go inside Molí del Grau? It's a stop on l'Aleixar's municipal mill trail, but as an abandoned structure it isn't set up for indoor visits — you view it from the outside as part of a walk through the countryside.

How far is it from Reus? Reus to l'Aleixar is a short drive of a little over ten minutes; from there, reaching the mill itself means a further short stretch on foot or by bike along local tracks.

What's the difference between Molí Nou and Molí Vell del Grau? Molí Nou is the newer of the two buildings and still has its water basin intact, while Molí Vell is the older structure standing right next to it, with part of its ground floor and a distinctive vaulted ceiling surviving.

Is it worth combining with other mills nearby? Yes — Molí del Grau is one of several historic flour mills covered by l'Aleixar's municipal trail, so it fits naturally into a longer countryside route rather than a standalone stop.