Fladda lighthouse is an active lighthouse located on the Islet of Fladda, one of the Slate Islands about 1.8 kilometres (1.1 mi) off Cullippol. The lighthouse was built in 1860 on project by David A. and Thomas Stevenson; it is a cylindrical masonry tower 13 metres (43 ft) high with gallery and lantern. The tower is painted white, the lantern is black and has ochre trim; it is a minor light operated by Northern Lighthouse Board but managed privately. The light emits a two white flashes every 9 seconds.[5]
The keeper's house seems to be home to a large colony of terns.