Alcover Main Festival Activity · Alcover, Alt Camp, Tarragona Image of Alcover, not of the place itself. The fiesta mayor of Alcover is celebrated in a town whose quarries have for centuries yielded a laminated limestone used for roofing and paving slabs, in which fossilized Triassic fish, insects and plants have been found, now displayed in the local museum. Photo: Marcel·lí Gausachs i Gausachs (Public domain) What to see and do in Alcover