Engelsburg, Architectural heritage monument in Recklinghausen, Germany.

The Engelsburg is a Baroque horseshoe-shaped residence begun around 1701, consisting of a two-storey main house with eleven window axes and an eastern service wing, joined at the corner by a rectangular tower with a Welsh hood. Its round-arched portal is flanked by pilasters and rosettes beneath a broken pediment, and the arch carries the chronogram MDCCI. The west wing, built 1712–1715, incorporates the medieval Stephansturm watchtower and encloses a rectangular courtyard.

Clamor Constantin Münch, electoral Cologne governor and judge, had a residence built around 1701, financed by the 1695 sale of Haus Wilbring. In 1712 he bought part of the medieval town wall and had the Stephansturm watchtower integrated into the west wing built until 1715. In 1802 Duke Ludwig-Engelbert of Arenberg set up his administration here; in 1904 the Engelsburg was sold to a casino society, and from 1923 to 1925 French troops occupied it during the Ruhr occupation.

The name Engelsburg is not medieval: it was coined for the casino society founded in 1904, and the house was earlier called Bissinghus after the Biesten family. The Gartensaal, or Kaminzimmer, keeps a baroque stucco ceiling and a stone fireplace bearing the Arenberg coat of arms with three golden medlar blossoms; on 21 August 2005 Cardinal Camillo Ruini and provost Heinrich Westhoff renamed and blessed it after Pope Benedict XVI.

Access to the building is typically provided through organized guided tours that explain its architecture and past uses. It is advisable to check ahead regarding opening times and visiting conditions, as the site is not always open to the public.

The Gartensaal, or Kaminzimmer, keeps a Baroque stucco ceiling and a stone fireplace bearing the Arenberg coat of arms with three golden quince blossoms on red; it may earlier have carried the Cologne coat of arms. On 21 August 2005 Cardinal Camillo Ruini and provost Heinrich Westhoff renamed and blessed the protected room after Pope Benedict XVI.