Kotayk region is situated in the North of Armenia. One third of the territory is covered by woods, and the climate is mild. Hrazdan river flows through the whole territory of the region. The center of the region – Hrazdan is a developed industrial center, rich with archeological and medieval monuments.

The region Kotayk has been historical center since the 5 th century.

In the canyon of Hrazdan river the village of Arzni is situated, 22 km North of Yerevan along the Hrazdan river. Arzni is famous for its mineral spring waters. The springs of Arzni are about 80m deep.