The former capital of the duchy Saxony-Gotha offers numerous historical buildings and monuments. Gotha was first referred to in documents as "villa gotaha", in a certificate of Karl der Große (Charlemagne) in the year 775. The dominating building is the imposing Schloss Friedenstein – the biggest German early Baroque palace complex from the 17th century. Especially worth mentioning is the ensemble of the citizens’ houses around the main market, the historical town hall, the orangery and the English Garden. Martin Luther visited Gotha several times, and here he dictated his first testament.