Westerplatte is a wooded peninsula at the mouth of the Dead Vistula, five kilometres from Gdansk's Old Town. Here, on 1 September 1939, the German navy opened fire on a small Polish military transit depot in what is generally taken to be the opening engagement of the Second World War. The seven-day defence of Westerplatte, hopelessly outnumbered, became one of the defining symbols of Polish resistance.
The peninsula is now a memorial site. The ruins of the garrison buildings remain largely as they were left, overgrown and bullet-scarred. A large monument from the communist era dominates the hilltop. There is a small museum on site. The atmosphere is sombre and the walk through the trees among the ruins is more affecting than the official monuments.
You can reach Westerplatte by tram from Gdansk city centre or by one of the small excursion boats that run from the waterfront near the Crane in summer. The boat trip past the shipyard and port is worth doing in its own right.