Due to the upcoming Independence Day (November 11), it's worth noting that some attractions are changing their opening hours. Most museums will be closed on Monday, November 10th (this applies to all branches of the National Museum and the Wielkopolska Independence Museum), but the Porta Posnania (Brama Poznania) and the Enigma Cipher Center, will be open but closed on November 12th. For details, see the attractions' tabs.