Weißhaus, Castle in Sülz, Germany.

The Weißhaus is a castle in the Sülz district of Cologne, listed as an architectural heritage monument in North Rhine-Westphalia. The building has a structured facade with worked stone details and sits within a residential part of the city.

The Weißhaus belonged to the Benedictine abbey of Sankt Pantaleon, founded in 957, and served the abbots as a summer residence. It is first named in a 1378 deed; a country house 'Zu dem Wyssenhuys' is recorded in 1468 and was destroyed by Cologne in 1474 during the Neuss War. After a fire in 1584, Abbot Henricus Spichernagel had it rebuilt from 1613 to 1619, and Abbot Aegidius Romanus expanded it as a summer residence in 1669.

The name Weißhaus first appears in a 1378 deed, when Godschalk and Johanna Volver took land from the Abbey of Saint Pantaleon as hereditary tenants. The abbots used the house as a summer residence. The chapel, consecrated on 10 November 1857 by Cardinal Archbishop Johannes von Geissel, holds tempera paintings by Johann Anton Ramboux and windows made in Johann Anton Friedrich Baudri's workshop.

The building sits in a residential neighborhood in Sülz and can be reached on foot or by public transport without difficulty. Since access may be limited, it is worth checking beforehand whether a visit inside is possible before making the trip.

The moat, about 5,600 square metres, is crossed by two arched bridges; the north-eastern one keeps its wrought-iron gate from the construction period around 1669, richly ornamented. The whole 20,800 square metre grounds are enclosed by a solid 2.20 metre wall and closed to the public; the iron grille on Luxemburger Straße allows a view of the front parts only.