from Dillenburg to Salzkotten Regular events Jazz-Weekend, in June Kirschenmarkt (cherry market), in June Aquarena-Nacht, in July Hubertus-Markt, in October Hengstparade des Hessischen Landgestüts (stallion parade) Maypole Festival in Eibach, at the beginning of May Rocknacht music festival in Eibach, in summer. Other Brineworks and healing spring, Eibach Economy and infrastructure Transport The bypass on Federal Highway (Bundesstraße) B277 opened in April 2007. It is a tunnel under the Schlossberg, bypassing the historic Old Town with its timber-frame houses and it was one of Germany's biggest tunnel projects. As a result of the bankruptcy of the contractor for the works, Walter Bau, completion of the project was delayed by more than a year. Dillenburg station is on the Dill line, part of the original Cologne-Gießen Railway. It runs from Gießen to Siegen and connects central Hesse with the Rhineland and the Ruhr. The Heller Valley Railway, runs from Betzdorf via Burbach to Dillenburg. The Dillenburg station was once a major freight terminal for iron mining in the Schelderwald. Established businesses Deutsche Post AG E.ON Mitte (OT Oberscheld) Funkenerosionstechnik Hartwig Hermann INDEN Design Isabellenhütte Heusler GmbH & Co. KG Linde & Wiemann Ströher-Keramik ThyssenKrupp Nirosta Dillenburg Works TSR Recycling GmbH & Co. KG Dillenburg Branch Volksbank Dill eG Weber Kunststofftechnik Media Dill-Post Dill-Zeitung Public institutions Police station Fire brigade Dill-Kliniken (hospital) Deaconate German Red Cross Dillkreis chapter Lahn-Dill Youth Office Lahn-Dill Jugendbildungswerk Lebenshilfe for the mentally handicapped Kreisvereinigung für den ehem. Dillkreis e.V. (District association for the former Dill district) Lahn-Dill Social Office Education Gewerbliche Schulen (vocational school) Goldbachschule (Haupt- and Realschule) Juliane-von-Stolberg-Schule (primary school) Johann-von-Nassau-Schule (Haupt- and Realschule) Kaufmännische Schulen (vocational school) Kindergartens (Evangelical, Catholic, municipal, Arbeiterwohlfahrt [German workers' welfare]) Lahn-Dill-Akademie (Folk high school) Otfried-Preußler-Schule für Praktisch Bildbare (special school) Roteberg-Schule (primary school) Schelderwald-Schule (primary school and Hauptschule) Wilhelm-von-Oranien-Schule (Gymnasium) Twin towns – sister cities Dillenburg is twinned with: Breda, Netherlands Diest, Belgium Hereford, England, United Kingdom Orange, France Notable people William I, Count of Nassau-Siegen (1487–1559) count from the House of Nassau, nicknamed the Rich William the Silent (1533–1584), leader in the Dutch war of independence against Spain. John VI, Count of Nassau-Dillenburg (1536–1606), aristocrat. Maurice, Prince of Orange (1567–1625), aristocrat. Ernest Casimir I, Count of Nassau-Dietz (1573–1632), ancestor of Kings of the Netherlands John Maurice, Prince of Nassau-Siegen (1604–1679), Dutch field marshal, called the Brazilian. Karl Christian Kehrer (1755-1833) portrait, landscape and history painter. John O. Meusebach (1812–1897),