Sviyazhsk was founded in 1551 as a fortress, which was built within four weeks from parts made in Uglich and transported down the Volga. It became a military base of the Russian army during the siege of Kazan (1552).
Since the 18th century, Sviyazhsk served as a center of an uyezd. In 1920–1927, it was a center of Sviyazhsky Kanton; in 1927–1931—the administrative center of Sviyazhsky District. In 1932, it was demoted to rural status.
There is a school and a club in Sviyazhsk, as well as a monastery associated with the name of Macarius of Unzha.
Sviyazhsk railway station is located 6 kilometers (3.7 mi) west of the island and is linked with Sviyazhsk proper by a highway running along a causeway.
Another way to get there is by a boat from the port of Kazan. In summer every day at 08:30 a fast boat departs at pier 8, and at 09:00 a slow boat. Tickets can be bought on the spot near the kassa.