In 1986, on the right bank of the Hrazdan River which flows through the city, archeologists found Karmir Berd (Red Castle) which dates back to the 2nd millennium BC.
Kanaker resident Khoja Plav reconstructed the Karmir (Red) Bridge, one of the three bridges over 1804-1813 the Hrazdan River. The bridge was named "red" because it was built of red tuff.