Landsfort Herle was a fortification with moat. It was probably built by the counts van Ahr-Hochstaden (also referd to as Here van Are). The name Landsfort (‘fort of the land’) comes from the fact that the fortification come under the responsibility of the land. In the 13th century Heerlen, and thus also Landsfort Herle, come in to the possession of the Dukes of Brabant, the Landsfort was (re)built by the Dukes of Brabant in 1244.
The wall is believed to be one of the oldest still recognisable in the Netherlands, part is now being excavated. A marquette of the fort was constructed from a map form 1787 found while the Pancratiuskerk was heavily reconstructed in the 1960s. The fort had three gates and had two towers (the bell tower of the church and the Schelmentoren, both with 2 metre thick walls).
In the roof of the church were little rooms for the inhabitants of Heerlen to take shelter in case of hostilities, unfortunately these rooms were destroyed when a, supposedly German, bomb hit the church at New Year's Eve 1944/1945.References:
The Externsteine (Extern stones) is a distinctive sandstone rock formation located in the Teutoburg Forest, near the town of Horn-Bad Meinberg. The formation is a tor consisting of several tall, narrow columns of rock which rise abruptly from the surrounding wooded hills. Archaeological excavations have yielded some Upper Paleolithic stone tools dating to about 10,700 BC from 9,600 BC.
In a popular tradition going back to an idea proposed to Hermann Hamelmann in 1564, the Externsteine are identified as a sacred site of the pagan Saxons, and the location of the Irminsul (sacral pillar-like object in German paganism) idol reportedly destroyed by Charlemagne; there is however no archaeological evidence that would confirm the site's use during the relevant period.
The stones were used as the site of a hermitage in the Middle Ages, and by at least the high medieval period were the site of a Christian chapel. The Externsteine relief is a medieval depiction of the Descent from the Cross. It remains controversial whether the site was already used for Christian worship in the 8th to early 10th centuries.
The Externsteine gained prominence when Völkisch and nationalistic scholars took an interest in the late 19th and early 20th centuries. This interest peaked under the Nazi regime, when the Externsteine became a focus of nazi propaganda. Today, they remain a popular tourist destination and also continue to attract Neo-Pagans and Neo-Nazis.