17000 plants from 1100 species, aquaria with 170 species of amazing fish and a cafe here. Also a historic site - air-raid shelters built by Nazis. Closed on Mondays! Nice website in English. Read more.
Beer lovers should take a tour around the Lech Brewery, one of the modernest and computerised breweries in the world, you will be amazed! Tours in Polish, English and German can be booked via website. Read more.
An interesting modernist building inspired by the shape of Rome's Palazzetto dello Sport Hall. Read more.