Ostrów Tumski (Cathedral Island)
It is the island where Wrocław began, and it has something that has almost vanished from Europe: gas lamps, lit and put out by hand every evening by a lamplighter in a cloak and top hat, who passes at sunset. It is not a re-enactment for tourists, it is how the lighting there works. You have to arrive at the right moment, which shifts daily with the sunset: in December the lamplighter comes round shortly after 16:00, in late June towards 21:00, and anyone half an hour late finds the lamps already burning and nobody in the street.

