Huge stone gateways guard both entrances to ul. Długa, the main thoroughfare. Start from the sixteenth-century gate at the top, Brama Wyżynna, and carry on east through the nearby Brama Zlota. You’ll soon come across the imposing Town Hall, which houses a Historical Museum (June–Sept Mon 10am–3pm, Tues–Sat 10am–6pm, Sun 11am–6pm; Oct–May Tues 10am–3pm, Wed–Sat 10am–4pm, Sun 11am–4pm; 10zł, free Mon June–Sept & Tues Oct–May) with shocking photos of the city’s wartime destruction. Further down, the street opens onto the wide expanse of ul. Długi Targ, where the ornate facade of Arthur’s Court (same hours as Historical Museum; 10zł) stands out among the fine mansions. The surrounding streets are also worth exploring, especially ul. Mariacka, brimming with amber traders, at the end of which stands St Mary’s Basilica (Mon–Sat 7.30am–6pm, Sun noon–6pm), the largest church in Poland.