Ostroh Castle
The Ostrozky castle with the 14th-century Masonry Tower.
The family seat of the Ostrozky princes. The 14th-century Masonry Tower is the castle's oldest structure, now with a museum display: it shows the collection of Volhynian “smiling icons”, while the Ostroh Bible is displayed in the Museum of Books and Printing in the Lutsk Gate Tower. Nearby stand the 16th-century Round Tower and the Epiphany Cathedral of 1453. The loudest name of the family is the grand hetman of Lithuania Kostiantyn Ivanovych Ostrozky: on 8 September 1514 at Orsha he defeated the Muscovite army, and his tombstone in the Dormition Cathedral of the Lavra listed more than sixty victories, though researchers believe there were fewer. The male line of the Ostrozkys died out with the death of Janusz in 1620, and the castle was ruined by the campaigns of 1648–1654.
5 Akademichna Street. Tue–Sun 9:30–17:15, Fri until 16:00, closed Mon (reserve website, as of 02.10.2026); the reserve does not publish separate winter hours, so in autumn and winter check before you travel. During an air raid alert the exhibitions close and visitors are taken to a shelter (the Ostroh City Council's “Museums” page).