Lake Sevan. The fascination and the pearl of mountainous Armenia is Sevan Lake, which is one of the world's greatest high altitude fresh-water lakes. It is about 1900 m above sea level. The lake is of volcanic origin and is surrounded with mountains of 3000 m and higer. The beautiful landscape and the crystal water serve nice preconditions for excellent rest.The lake is also famous for its peninsula and medieval church complex built in 874.