Gdańsk · With kids

A science and history centre built into the nineteenth-century fortifications on Gradowa Hill, Góra Gradowa 6, ten minutes' walk from Gdańsk Główny and with the best free view over the city from the ramparts. Monday to Saturday 10:00–18:00, closed Sundays. Escape room, children's workshops and birthday parties alongside the exhibitions; underground parking is 8 zł an hour.

About 125 hectares of wooded valley at ul. Karwieńska 3 in Oliwa, holding 868 animals across 164 species. It is an EAZA member running more than 50 European breeding programmes, and it does scheduled animal feedings. Open every day; buy tickets online at bilety.zoo.gda.pl. Wear proper shoes — the site is steep and long.

Zamkowa Góra 5 in Sopot, with a Wild River, family and turbo slides, a water playground, a baby pool and a seasonal children's pool. It is not cheap in high season: between 27 June and 31 August 2026 pool-only tickets were 79 zł for an hour, 139 zł for three hours and 189 zł all day. Off-season rates are lower.

Five hands-on exhibitions on physics, biology, nature, health and water at Al. Zwycięstwa 96/98, half an hour up the SKM line. Summer hours are 9:00–19:00 daily from late June to the end of August; the centre then shuts for about a fortnight in early September before reopening on the school-year timetable, closed Mondays. Check the site before you travel.

Brzeźno is the one locals use: a 140-metre pier, changing rooms, toilets, food stalls and free Wi-Fi, reached by tram from the centre. Jelitkowo sits further along towards Sopot with an outdoor gym and equipment hire. Stogi and Sobieszewo hold Blue Flag status, and four of the beaches have accessible facilities.