Harburg Castle (12th – 19th centuries): large castle complex; walls with battlements and six towers, bailey and gates; main castle with keep (12th – 13th centuries), ‘Kastenhaus’ (1594) with stables and armoury, ‘Saalbau’ with banqueting hall (stuccowork in 1719), ‘Fürstenbau’ and St. Michael’s Chapel (stuccowork in 1719).