In 1131, the place was mentioned for the first time, as Waltprugele in a papal deed of ownership for the St. Cassius abbey in Bonn. In this document Pope Innocent II confirmed the Church's ownership and the ecclesiastical tithe (which later evolved into land tax and wealth tax). Back then, this housing estate belonged to the sphere of influence of the first counts of Berg, as well as of the first counts of Sayn. In the same year, construction began on a new Protestant church, whose steeple survives to the present day. In 1174, Waldbröl came under the governance of Homburg, which was owned by the counts of Sayn. However, the property situation between the counts of Berg and of Sayn remained controversial. The first reference to a Waldbröl citizen was in a document of 1212, when a priest named Wolradu resided there and made a donation to St. Michael's abbey in the Berg county. In 1261, the knightly Isengarten dynasty was mentioned for the first time, followed by Diezenkausen in 1300 and Beuinghausen in 1323. They were long term ministers of the counts of Sayn and Berg and had received fiefs from them in the area of the modern town. In 1314, Waldbröl experienced an epidemic plague and a big famine. The first modern districts of Waldbröl were mentioned in 1316. In 1575, almost all today's districts were drawn on the map by
Arnoldus Mercator. By the Treaty of Siegburg, Waldbröl went to the duchy of Berg and was attributed to the Windeck authority. When Johann Wilhelm, the last duke of Berg-Mark, died in 1609, the
Treaty of Xanten attributed the Berg County (including Waldbröl) to the duchy of Pfalz-Neuburg of the Wittelsbach family. Between 1816 and 1932, the town of Waldbröl was the residence of the head of the district authority and seat of the Prussian Administrative District of Waldbröl existing at that time. On 15 December 1906 the extension of the Wiehl Valley railroad was brought on steam from Wiehl to Waldbröl, linking Waldbröl to the German railway network.
Nazi period Hailing from Niederbreidenbach near Nümbrecht, Dr.
Robert Ley, one of the leading representatives of National Socialism, intended to make Waldbröl the "largest town between
Cologne and
Kassel". Amongst other things, the so-called
Volkstraktorenwerke (National Tractor Plants), an Adolf Hitler School, and a
Strength Through Joy (KdF) hotel were projected. Aside from the uncompleted hotel, none of the projects was ever realised. The population figure was meant to increase up to 300,000. It was planned to establish an underground barracks, a theatre, a cinema and a motorway access. Planning continued until autumn 1944 but then got stuck in an early stage due to the course of the war and Ley's waning influence. Only the topographical studies of the garden and landscape designer Wilhelm Heintz, who was already involved in the planning of the "Town Of The Hermann Göring Plants (
Salzgitter)" and the "Town Of The
KdF Vehicle (Volkswagen Beetle) (
Wolfsburg), were finished to a large extent. Apart from some unfinished buildings, only the hotel survived and initially after the war served as hospital, subsequently as school of the German armed forces and since 2006 as 'centre for encounter' of the European Institute of Applied Buddhism. Furthermore, the former architect house of the planned Adolf Hitler School still exists. Since the early 1950s it has served as the country hostel of the Humboldt Grammar School in Düsseldorf.
After WW II In 1957, Waldbröl was the third municipality in upper Berg county to be awarded the status of "town". Between 1990 and 2006, Waldbröl was the location of the German Armed Forces Academy for Information and Communication (
Akademie der Bundeswehr für Information und Kommunikation), which was founded here and like its predecessors the Transformation Centre (), the Psychological Defense School (
Schule für psychologische Verteidigung), the Communication Academy (
Akademie für Kommunikation), the Department for Studies and Exercises (
Amt für Studien und Übungen), and the Centre For Analyses And Studies (
Zentrum für Analysen und Studien), was accommodated in the hotel building. From 1990 onwards, Waldbröl was the destination of intense immigration of ethnic German immigrants from the Soviet Union/CIS countries; at least 3,000 of them became inhabitants of Waldbröl. Among others, this process was fostered by the fact that Waldbröl resident Horst Waffenschmidt was Commissioner for Ethnic German Immigrants (Aussiedlerbeauftragter) of the Federal Government. ==Town coat of arms==