Gdynia's Southern Pier anchors the most interesting part of the city's waterfront, with two museum ships moored alongside: the ORP Błyskawica, a Polish destroyer that served with the Royal Navy in the Second World War and survived the Blitz, and the Dar Pomorza, a three-masted sailing ship that trained Polish merchant navy officers for over sixty years. Both ships are open to visitors and give a vivid sense of life at sea.
The downtown along 10 Lutego Street and around Kościuszko Square preserves the Modernist architecture that makes Gdynia architecturally unusual. Gdynia City Museum has a good exhibition on the city's rapid interwar growth. The nearby Emigration Museum, opened in 2015, tells the story of the millions of people who passed through Gdynia's port on their way to a new life in the Americas — relevant history for anyone whose family made that journey.
Gdynia also hosts Poland's most prestigious film festival each autumn and the Open'er music festival each summer. Kamienna Góra, a small hilltop park above the port, gives an excellent view over the city and the bay.