The Ptghni Church or Ptghnavank is located in Ptghni village in the Kotayk province. It is only 20 minutes from the center of Yerevan! It was built in the 6th-7th century and is one of the oldest and most important surviving example of a domed hall church seen in Armenia and served as a prototype for a large number of Armenian churches constructed after the 9th century. Unfortunately, it is very poor condition.