- en.m.wikipedia.org Kronstadt FortressThe construction of the fortress began twenty years after the construction of the Kronstadt forts began, and ended at the end of the 19th century.[2].
- fashionrebelsbook.com 17340021-museum-kronstadt-…Today, the Kronstadt Fortress hosts within its walls the naval school of the Navy (in the defensive barracks), the naval cadet corps.
- carusel.tours kronstadt_enKronstadt. Visit of the Kotlin Island, that was known as the most protected fortress in the world, with its magnificent Naval Cathedral and sea forts.
- brilliant-tourism.com 12520159-kronstadt-fortress…Due to the constant threat of war with Sweden, the Kronstadt fortress was kept on alert and modernized in armament.
- russiabeyond.com travel/335212-kronstadt-fortress…The island fortress, surrounded by forts, grew so much that it ended up being called Kronstadt - “the crown city”.
- greatplainsparanormal.com 6475384-fortress-…After the victory in 1812, the Kronstadt fortress passed to a peaceful life. ... The question of building the Kronstadt fortress in stone was repeatedly raised.
- traveleren.gitlab.io russia1169/sights-of-…Sights of Kronstadt There are many interesting forts in the Kronstadt fortress, but this is the most remarkable.
- tripadvisor.com Attraction_Review-g2394587-…The boat trip ends at one fortress linked by road to the Kronstadt island. ... Can the fortress of Kronstadt be visited? if so, how much is the ticket price?
- tracesofwar.com sights/58158/Fortress-Kronstadt…Fortress Kronstadt - Fort South No. 1 #1. This Russian fort was built from 1855 to 1856 and modernised several times.
- visit-saint-petersburg.ru kronstadt-fortress/Built as an island fortress and developed into a major naval base, Kronstadt was considered a site of military significance and was off-limits to foreigners.