Harmaja

Harmaja (Swedish: Gråhara) is an island and a lighthouse outside Helsinki, south of the Suomenlinna sea fortress. The island has been functioning as a landmark since the 16th century. A landmark structure was built on the island in the 18th century and a light house in 1883. The first lighthouse was only 7.3 m high and it soon proved to be too low. In 1900 the height was doubled by creating a rectangular brick building on a granite base. A large foghorn alerted ships in fog and in bad visibility. Harmaja received the world's first directed and undirected radio beacon in 1936. The lighthouse is fully automated today.

Harmaja Lighthouse
Gråhara

Harmaja Lighthouse
Harmaja Lighthouse Gråhara Finland
Location	Helsinki, Finland
Coordinates	60.105043°N 24.975506°E / 60.105043; 24.975506
Year first constructed	1883 (first)
Year first lit	1900 (tower raised)
Construction	stone basement, cast iron tower
Tower shape	cylindrical tower with balcony and lantern on a square basement
Markings / pattern	red tower with a horizontal white band, green lantern dome, unpainted basement
Tower height	15 metres (49 ft)
Focal height	24 metres (79 ft)
Range	14.9 nautical mile
Characteristic	Oc WRG 6s
Admiralty number	C5190
NGA number	14528
ARLHS number	FIN-008[1]

There is also a pilot station on the island.

During the 1952 Summer Olympics this was the center of the Olympic sailing event.