page_title: Regensberg Castle
section_title: Oberburg und Unterburg
hierarchical_section_title: Regensberg Castle / Architecture and points of interest / Oberburg und Unterburg
caption_attribution_description: Oberburg in Regensberg (Switzerland)
context_page_description: Regensberg Castle is a hill castle which was built about the mid-13th century AD by the House of Regensberg in the Swiss municipality of Regensberg in the Canton of Zürich.
context_section_description: Regensberg was designed as a fortified castle town and built by then modern contemporary criteria. The so-called upper castle (Oberburg) comprises a rectangular plaza as main square which is surrounded two rows of houses, and into the limestone a 57 m (187 ft) deep water well was carved. The lower castle (Unterburg) or lower town (Unterstadt) was probably built in the 14th century nestled at the castle's hill outside of the town wall. Therefore, it was not involved in the modernization of the upper castle in 1689.
caption: gate between Oberburg and Unterburg
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