The first documents regarding the founding of Tazlau, say that "the founders of Tazla are Toader and Lie, the servants of Alexandru cel Bun, who in 1424, are given Tazlau, near the river, at his side, at the bridge and where he leaves the forest. , higher up at the foot of the Meteist, to set up and establish a monastery, to be theirs, theirs, their foundations, theirs and their children and the whole generation. "
Also the first documents regarding the establishment of Tazlău are related to the construction of the Tazlău Monastery between 1496-1497, by Stefan cel Mare.
On the map of Moldova printed in the Netherlands in 1737, Tazlăul is presented as an area covered with forest and a monastery.
Tazlaului hill offers a wide view over the Bistrita Valley and the adjacent localities from Piatra-Neamt to Buhusi.