The main reason for the decision to build the lighthouse was to warn sailors of drifting sea ice; which caused a major obstacle in the Gulf of Finland.
[3] The current iron metal structure of the lighthouse was built in 1874.
The design of the Ristna Lighthouse was made by Gustave Eiffel.
[4] The lighthouse survived World War I with small amounts of damage; however, to improve the lighthouse's stability, the structure was cast in concrete in 1920.
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