The Sea Towers near the harbour of Gdynia are the tallest apartment buildings in Poland and the highest towers of the country outside Warsaw. Construction of the 141 tall towers started in 2006 and finished three years later. Most of the apartments are privately owned, but also visitors can rent via various organizations apartments with great views over Gdynia and the Baltic Sea.
http://www.visitpomerania.eu/cities/gdynia/attractions/sea-towers/