The Suurupi beacon light, which flashes at a height of 66 metres, draws seafarers’ attention to the dangerous shallows of the fairway between Naissaar and the mainland. The Suurupi peninsula is located on the coast of Harju County, in the area between Vääna-Jõesuu and Rannamõisa, and with a maximum height of 43 metres, it is part of the limestone plateau of North Estonia. The line between Suurupi peninsula and Naissaar is regarded as the western boundary of Tallinn Bay.
Ancient historical records confirm that the government of the Russian Empire put so much focus on the waters of the Gulf of Finland, primarily because that is the area where the Empire’s naval fleet moved. In order to ensure safe navigation in the Baltic Sea for Russian ships, various seamarks were set up and lighthouses were built on the coastal regions of Estonia.