Andriejaičiai oak - a natural heritage object protected by Šilalė district municipality - grows next to the Akmena river valley. Andriejaičiai village is also located here. Oak delights everyone with its vitality and wide crown. Its height is 26 m and its circumference at chest height is 5 m. The age is not determined, but it is estimated that the tree could be over 300 years old. There was a cemetery in his shadow. Their presence is evidenced by the remaining old crosses. People say that there was an even bigger oak tree next to Andriejaitiai oak.