It is located in the Hohe Mark Nature Park and surrounded by the "Hagen" and "Kippheide" forests to the south of the Dorsten district of Lembeck in the northwest of the Recklinghausen region. The name "Lembeck" for the castle is derived from Low German. The root word "beke" signifies "flowing water" or "brook". Consequently, Lembeck can be translated as Lehmbach, indicating its previous location in a swamp and bog region.
As a result, the various parts of the castle are situated on an island that is interconnected by bridges. The Baroque palace complex exhibits a symmetrical structure, defined by a rectilinear east-west axis that extends for a length of meters. The axis begins with a meter-long avenue from the east that leads to the former three-winged outer bailey. Access to the outer bailey is granted through two consecutive bridges. It is currently covered with a basic mansard roof.
Above the gateway is a keystone displaying the coats of arms of Dietrich Conrad Adolf von Westerholt zu Lembeck and his wife Marie Theodora von Waldbott-Bassenheim-Gudenau, along with the year , signifying the completion of the outer castle rebuilding. At its ends, the southern wing of the outer bailey is bordered by single-story corner towers adorned with Welsh hoods and imperial shaft ends. These towers feature keyholes in the basement. Additionally, the southeast tower, as well as the towers situated to the left and right of the gatehouse, also possess embrasures.
Access to the three-story manor house is through the outer courtyard and across a stone-arched bridge. Although initially intended as a three-winged structure, it is believed that financial constraints led to its execution as a two-winged building.
Notably, the manor house was originally decorated with a plaster finish featuring incised ashlars, rather than painted ashlars as previously assumed.
