Karostas Sv. Nikolaja pareizticīgo Jūras katedrāle

A former military prison in Liepāja’s Karosta district, built in the early 20th century and now a museum with a theatrical twist. Tours take in the cells and solitary-confinement cells and an exhibition on the Second World War and Soviet times; you can sit through a “discipline” show, eat in the prison canteen or spend a night in a cell. May and September 10–18, June–August 9–19, October–April Fri–Sun 12–16.

The cathedral of the Bishop of Liepāja in the old town, an 18th-century Lutheran church with a richly decorated Rococo interior. Its organ was once the largest mechanical organ in the world, and organ concerts are held here.

A Gothic Revival castle on the shore of Lake Ēdole, surrounded by a landscape park. It originally consisted of two residential buildings joined by a stone wall and is an architectural and archaeological monument of national importance.