A: St. Gallen, Sankt Gallen, Switzerland
The Abrogans, or Codex Abrogans, a dictionary of synonyms or glossary or word-list from Latin into Old High German, is the oldest surviving book in the German language. Abrogans ("humble") is the first word on the word-list.
The codex is preserved in the library of the Abbey of St. Gall. (St. Gall, Stiftsbibliothek, Codex 911). In February 2014 a digital facsimile was available as part of the Codices Electronic Sangallenses (CESG) virtual library project at this link.