Some Sevit, Artificial island in Seocho District, South Korea.

Some Sevit is a group of three artificial floating islands on the Han River in Seoul: Gavit, Chavit and Solvit. Each island is a buoyant pontoon topped with a building; Gavit holds a performance hall and a moonlight trail, Chavit has culture-experience facilities and the Golden Blue Marina, and Solvit has water-leisure facilities. A fourth structure, Yevit, is an on-land media art gallery.

Seoul received citizen Kim Eun-sung's proposal for artificial islands on the Han River in November 2006, and construction began in April 2009. The three floating structures were moved onto the river and floated in 2010, and viewing areas opened on 21 May 2011. After a closure over management and construction problems, Gavit reopened in May 2014, Chavit in July and Solvit in October, under the name Some Sevit.

The name Sebitseom means "three light islands," and each island has a role: Gavit for performances, Chavit for entertainment with yacht programs, Solvit for water leisure. Yevit, a media art gallery on land, hosts cultural events and screenings. The site appeared in the film Avengers: Age of Ultron as Dr. Helen Cho's laboratory.

The site is accessible by public transportation with multiple bus lines and subway stations serving the Seocho area. Visitors should wear comfortable walking shoes as exploring the structures and pathways requires walking between the three buildings.

Each evening the three structures transform with advanced lighting systems that create patterns reflected across the river. This daily light display gives the island a different character when visited after dark.