Smeaton's Tower stood were becoming eroded. Each time a large wave hit, the lighthouse shook from side to side. Smeaton's Tower ceased operation in 1879 with the illumination of Douglass's Tower on an adjacent rock. In 1882 the upper part of Smeaton's Tower was dismantled and rebuilt as a memorial to Smeaton on a new base on Plymouth Hoe, replacing the triangular obelisk that had been built there by Trinity House as a navigation aid in the early 19th century. It was opened to the public by the Mayor of Plymouth on 24 September 1884. The foundation and stub of the old
Sandvigodden Lighthouse were sold and are now a private residence. Sandvigodden Lighthouse Sandvigodden Lighthouse () is a coastal lighthouse in the municipality of Arendal in Aust-Agder county, Norway. The light is located on the southeast shore of the island of Hisøya on the edge of the village of Sandviga. The light marks the west side of the entrance to the Galtesundet strait, which leads north to the town of Arendal. The lighthouse was originally built in 1844. In 1934, a new lighthouse was constructed right in front of the older tower. The new tower is tall and is painted white with a