Alter-do-Chao village is 30 km from Santarem. It is the most sought after village in the region and a popular stop in the route of foreign cruises. Bathed by the Tapajos river, its beach are temporary, depending on the tides of the river. One of the curiosities of the place is the green lake, whose waters change during the day, from blue to green. Annually, in September, the Party of the Caire happens, a folcloric and religious manifestation that lasts 8 days. They several presentations of dance and music of quaint names: camelu, desfeiteira, lundu, the waltz of tip of the handkerchief, marambire, quadrilha, cruisador tupi, macucaua, cecuiara and many others.