Founding and age
Written records of the place Dahlem begin with a first documentary mention dated 20 January 867. In the local history published by the municipality, Dahlem is named therein as a place in the Eifelgau. The present larger municipality was formed in the course of the municipal territorial reform with effect from 1 July 1969; in that process the Amt Schmidtheim in its composition of 1945 was dissolved. The district of Schmidtheim appears in the same Prümer tradition of 867 as “Smideheim”, Baasem as “Basenheim”; Kronenburg has been attested in documents since 1277. Berk is first mentioned in the municipality’s local history around 1200 as “Berchheim”. The lords of Schmidtheim have been attested in documents since 1198.
A founding charter in the narrower sense is not recorded for Dahlem on the municipal website. What is documented is the first documentary mention of 867 as well as the formation of the present municipality of Dahlem on the basis of the Act on the reorganisation of municipalities of the district of Schleiden of 24 June 1969 with effect from 1 July 1969. The main statute confirms the formation as of 1 July 1969, the administrative seat in Schmidtheim and the area of the cadastral districts Baasem, Berk, Dahlem, Kronenburg and Schmidtheim. The Schmidtheim local history describes Dahlem, Baasem and Schmidtheim as Frankish settlements presumably founded in the 7th century in the Blankenheim limestone basin. On 1 January 1972 the district of Schleiden was dissolved; the municipality of Dahlem has since belonged to the district of Euskirchen.
From the Roman period, according to the Dahlem local history, finds of brick fragments near the Roman road east of the so-called barrows (1930) as well as cremation graves with grave goods in the parcel “Im Leger” (1934) are documented. The Schmidtheim local history mentions traces of pre-Roman presence in the forest district Eichholz as well as remains of Roman building near the Roman road Trier–Cologne. In 973 the village is named as Dalheim in a charter of King Otto II. In 1130 the Abbey of Stavelot-Malmedy held according to the local history nine hides of land in Dahlem. Demonstrably since 1362 Dahlem belonged to the lordship of Kronenburg and remained closely linked with its fate until 1794. The Schöffenbuch of the Dahlem court compiled in 1561 documents lower jurisdiction into the French period. In 1795/96 Dahlem became a Mairie under French administration; in 1816/19 the region passed via the Congress of Vienna and an interim phase under Mecklenburg-Strelitz to Prussia. In parallel, Kronenburg developed from its first mention in 1277 as a castle-valley settlement with later ironworks along the Kyll; in 1350 Kronenburg is named according to the local history as a town (oppidum), and around 1400 it received curtain walls, towers and gates. In 1487 the castle came according to KuLaDig into the possession of the Counts of Manderscheid and for about 250 years was the centre of an important lordship in the upper Kyll valley. In 1555 Kronenburg fell according to the Arbeitsgemeinschaft Historische Stadt- und Ortskerne NRW, owing to affiliation with the Duchy of Luxembourg, under Spanish rule until 1715. Schmidtheim became the administrative seat and in 1870/71 received the highest railway station in the Eifel. Berk belonged ecclesiastically and territorially to the lordship of Kronenburg and was elevated to a parish in 1803. In 1969 Baasem, Berk, Kronenburg and Schmidtheim were incorporated into the larger municipality of Dahlem; the administrative seat is in Schmidtheim. In 1972 Schmidtheim, with the dissolution of the district of Schleiden, came to the district of Euskirchen.
| Year | Title | Description |
|---|---|---|
| 867 | First documentary mention | First known mention of Dahlem in Otbert's deed of gift dated 20 January 867 in the Eifelgau; at the same time Smideheim and Basenheim are named in the PrĂĽm tradition. |
| 973 | Mention as Dalheim | In a charter of King Otto II, the hunting ban is confirmed for Archbishop Gero of Cologne; the village of Dalheim is also named therein. |
| 1362 | Affiliation with the Lordship of Kronenburg | Documented from 1362, Dahlem belonged to the Lordship of Kronenburg and remained linked to its history until 1794. |
| 1528 | First church mention | The first mention of a church or chapel in Dahlem dates from 1528; around 1550 the first pastor, Laurentius Saturnus, is named. |
| 1795/96 | Mairie under French administration | After the Austrian Netherlands were annexed to France, Dahlem became a mairie; the first maire was Peter Casters. At that time 564 people lived in 90 houses. |
| 1922 | Dahlem passenger station | On 18 December 1922 the Dahlem passenger station was opened; a goods loading point had already existed since 1904. |
| 1961 | Dahlemer Binz airfield | Inauguration and opening of the airfield on the Dahlemer Binz. |
| 1969 | Municipal territorial reform | In the course of the municipal territorial reform, Dahlem became a large municipality with the districts of Baasem, Berk/Frauenkron, Dahlem, Kronenburg and Schmidtheim; the seat of administration is Schmidtheim. |
| 1130 | Property of the Abbey of Stavelot-Malmedy | According to local history, the Abbey of Stavelot-Malmedy owned nine hides of land in Dahlem; as late as 1627 the "Juchenfelder" were still associated with this property. |
| 1277 | First mention of Kronenburg | Kronenburg is first mentioned in a charter of the Abbey of Malmedy-Stavelot; the Order of St John already had a house there and remained patron until 1803. |
| 1561 | Schöffenbuch of the Dahlem court | The Schöffenbuch begun in 1561 and kept until 1796 documents purchase, exchange, inheritance and mortgage matters of the lower jurisdiction. |
| 1631–1638 | Witch hunts in Dahlem | During the witch hunts, according to local history, about 16 people from Dahlem, mostly women, were executed; in the Lordship of Kronenburg many people also died of the plague. |
| 1848 | Provincial road Cologne–Trier | The provincial road from Cologne to Trier, which ran through Dahlem, was completed and improved long-distance road links. |
| 1870/71 | Railway connection for Schmidtheim | With the completion of the Cologne–Trier railway line, Schmidtheim received the highest station in the Eifel (around 554 to 555 metres above sea level). |
| 1921–1926 | Tell plays in Kronenburg | Below the castle, Schiller's "Wilhelm Tell" was performed on an open-air stage; according to local history, a total of 55 performances took place. |
| 1967 | Dahlem's 1100th anniversary | The municipality celebrated the 1100th anniversary of the place Dahlem and published the book "Meine Heimat Dahlem/Eifel". |
| 1985 | Kronenburg conservation area statute | On 14 August 1985 the municipality of Dahlem adopted a conservation area statute for the castle–valley settlement area of Kronenburg; it was published on 3 October 1985. |
| 2022 | Relocation of Abbey Maria Frieden | After 69 years on the Dahlemer Binz, the Trappistine community Abbey Maria Frieden left Dahlem on 22 June 2022 and moved to Kall-Steinfeld. |
| 50 v.–400 n. Chr. | Roman-period finds near Dahlem | Near the Roman road east of the so-called barrows, brick sherds were found in 1930; in the field "Im Leger", cremation graves with grave goods were discovered in 1934. |
| um 1200 | First mention of Berk as Berchheim | Berk local history records around 1200 the first historical mention as "Berchheim"; from about 1360 Berk is known as a chapel place and belonged ecclesiastically and territorially to the Lordship of Kronenburg. |
| 1350 | Kronenburg named as a town | According to Kronenburg local history, the place is called a town (oppidum) in 1350; around 1400 it receives ring walls, towers and gates. |
| 1492–1508 | Construction of the parish church of St John the Baptist | The late Gothic parish church of St John the Baptist in Kronenburg was built, according to the Working Group Historic Town and Village Centres NRW, between 1492 and 1508 as a single-pier church. |
| 1768 | Berk pilgrimage church | The church in Berk dedicated to Saint Brice was designated a pilgrimage church in 1768; Pope Clement XIII privileged the Helpers' altar and granted indulgences to the Helpers' confraternity. |
| 1803 | Elevation of Berk to a parish | The chapel place Berk was elevated to a parish in 1803. |
| 1832 | Concession deed for the Dahlemer Berg mine | On 26 August 1832 the Royal Prussian Chief Mining Authority issued the concession deed for the ironstone mine "Dahlemer Berg"; 88 Dahlem landowners are named therein. |
| 1892 | Dedication of the Marienallee | Pastor Klerx dedicated the lime and chestnut avenue "Marienallee"; according to local history almost every Dahlem family took part by digging a planting pit. |
| 1911 | Passage of Kaiser Wilhelm II | On 20 October 1911 Kaiser Wilhelm II passed through the festively decorated place of Dahlem on his journey from Bonn to Lieser. |
| 1973–1976 | Construction of Kronenburg Lake | Kronenburg Lake was created as a cross-border joint project of North Rhine-Westphalia and Rhineland-Palatinate; it serves as a flood retention basin for the catchment of the Kyll and Taubkyll. |
| 1977 | Kronenburg's 700th anniversary | According to local history, Kronenburg celebrated the 700th anniversary of its first documentary mention. |
| 1979–1981 | Securing of Kronenburg castle ruins | According to the Working Group Historic Town and Village Centres NRW, the ruins of the Kronenburg castle complex were comprehensively secured in the years 1979 to 1981. |
| 2007 | Partnership charter with Sarzeau | In November and December 2007 the official partnership charter between the municipality of Dahlem and the Breton municipality of Sarzeau was signed in Sarzeau and in Dahlem. |
| 2013 | Water rope park at Kronenburg Lake | According to the special-purpose association, since 2013 Kronenburg Lake has had Germany's only water rope park. |
| 1198 | First mention of the Lords of Schmidtheim | According to Schmidtheim local history, the brothers Heinrich and Godfried "van Smydehem" appear as witnesses in a charter; the municipality's wedding-venue page cites this as the first mention of the Lords of Smydeheim as residents of the moated castle. |
| 1327 | Independent Kronenburg line | According to the Working Group Historic Town and Village Centres NRW, an independent Kronenburg line developed in 1327 with Knight Peter of Kronenburg, who died in 1414 without male heirs. |
| 1487 | Kronenburg to the Counts of Manderscheid | According to KuLaDig, Kronenburg Castle came into the possession of the Counts of Manderscheid in 1487 and for about 250 years was the centre of one of the most important lordships in the upper Kyll valley. |
| 1760–1769 | Construction of the Kronenburg manor house | The listed manor house in Kronenburg was built, according to the municipality's wedding-venue page, between 1760 and 1769 on behalf of the Count of Blankenheim and from 1769 served as the seat of office for the bailiff J. Faymonville. |
| 1976 | Grant of coat of arms and banner | By deed of the district president dated 6 April 1976, the municipality of Dahlem received, according to its main statute, the right to use a coat of arms and a flag as a banner. |
| 2016 | Refurbishment of the Kronenburg Lake dam | According to the Kronenburg Lake special-purpose association, the asphalt seal of the dam was extensively refurbished in 2016: for over 1.5 million euros about 6,600 square metres of embankment surface were milled and about 1,200 tonnes of asphalt newly laid. |