Trakai Island Castle (Trakų salos pilis) is an island castle located in Trakai, Lithuania, on an island in Lake Galvė. The construction of the stone castle was begun in the 14th century by Kęstutis, and around 1409 major works were completed by his son Vytautas the Great, who died in this castle in 1430. Trakai was one of the main centers of the Grand Duchy of Lithuania and the castle held great strategic importance.

A major reconstruction project was begun in 1946. Active work started in 1951–1952. The major portion of the reconstruction was finished in 1961. The castle was reconstructed in a 15th-century style. Trakai Island Castle is now a major tourist attraction.

Below is a selection of photos taken during a visit to the Castle on september 25 2025. Click on a small photo for a larger view, then select the next one with the cursor keys or the arrows on either side of the photo.