Comprising 7 islands, Petrogradsky District is known for centuries-old Peter and Paul Fortress, which contains the namesake cathedral and a museum. Kirov Central Park is one of several green spaces, popular for ice skating in winter and cultural festivals. Nearby, Yelagin Palace displays 18th-century Russian art. Upscale waterfront eateries, chic pubs and traditional vodka bars are dotted among the islands.