The Castell romà de Can Blai is a Roman fort that was never finished, standing at the highest point of the isthmus beside the road from La Savina to La Mola. The Romans laid out a square fort with five towers here at the turn of the 4th century and then, as far as anyone can tell, walked away. What remains are the foundations, which you can walk around from the roadside.
What it is
A late-imperial Roman fort built between the end of the 3rd and the start of the 4th century AD. The plan is square, about 40 m a side, with five projecting towers. Excavations in the 1970s and 1980s found the fort unfinished, with hardly any sign of occupation. It was declared a Site of Cultural Interest (BIC) in 1994.
Visiting
The foundations of the walls and the towers survive, so what you see is the footprint of the fort rather than standing walls. The square plan and the five towers are easy to read on the ground.
Getting there
The site is at the highest point of the isthmus, beside the road from La Savina to La Mola at km 10.
Nearby
Ses Platgetes is 1.4 km away and Platja des Caló 1.6 km.







