"Olèrdola was, after Barcelona, ​​the second most important city between the 10th and early 12th centuries, and it is the site from which we can explain the medieval period," says archaeologist Núria Molist, head of the Olèrdola Archaeological Museum. At 350 metres above sea level, on a rocky platform overlooking the Penedès plain, the mountain ranges and the Mediterranean Sea, this site is one of the most important in Catalonia. It has been excavated for decades, and is a source of knowledge about how people lived in the High Middle Ages, but the interpretation centre, opened in 1971, has become obsolete. For this reason, with an investment of 424,861 euros from the Next Generation funds, part of the castle, the Roman watchtower from the Republican period, will be recovered in the coming months and the museography will be completely renovated. A helicopter and animals were used to bring all the necessary materials for the works to the top of Sant Miquel Hill.