The Santekliai Sacred Pine Forest (Santeklių miško šventosios pušys) is the most important part of the ancient sacred places of Viekšniai and surrounding areas. It is believed that the Great Pines are a place where the Sun spends the night and has her seat. Following the introduction of Christianity, the trees often served as the altar or as crosses, which were also made from the cut down sacred trees. Chapels and crosses are attached to two of the pines. Believers seek their way to the pines, where they make promises turning towards the crosses and looking through the branches into the sky.