Skip to content
stuff to do in.cologne
© Magnus Manske · CC BY-SA 3.0

Isenburg

Moated castle on a water-encircled island in Cologne-Holweide, with a 16th-century tower and an 18th-century manor house.

Although the Isenburg was first documented as early as 1364, the structure standing today no longer reflects that original medieval building.

At a Glance

Type
Moated castle, listed monument
Location
Johann-Bensberg-Straße, Cologne-Holweide (Mülheim district)
First mentioned
1364 in historical records
Components
Tower (16th c.), manor house (18th c.), outer bailey (19th c.)
Distinctive feature
Situated on an island surrounded by moats
Heritage protection
Since 3 July 1984 (monument register no. 2498)
Did you know?

From 1985 to 2011, part of Isenburg Castle was used as a restaurant, after which the space became private living quarters again.

Layout of the Complex

The castle is divided into a main castle and an outer bailey. The manor house and tower stand on a raised island encircled by water and reached via two bridges, while a three-arched bridge leads from the forecourt to the outer bailey. One moat surrounds the main castle and another the entire grounds, both fed by the Strunder Bach stream.

© Magnus Manske · CC BY-SA 3.0

Tower and Manor House

The square 16th-century tower is built of brick and topped with an onion dome, weathervane, and dormer windows. In the 18th century, a three-storey manor house in the classicist style was added onto the tower. It features a rendered façade with ashlar detailing and dormers, bordered on two sides by a terrace that forms the forecourt.

Outer Bailey

The outer bailey consists of one- and two-storey rendered and brick buildings from the 19th century, arranged around a rectangular courtyard. Among them is the former servants' house, which retains its original room doors, windows, and wooden staircase.

History and Use

The Isenburg marks one of the earliest settled sites in Holweide. In 1983, Bruno Wasser acquired the castle and had the manor house, an extension, and the moat restored, while the outer bailey was converted into condominiums. From 1985 to 2011 part of the castle housed a restaurant, after which the space returned to private residential use.

Good to Know

The Isenburg lent its name to the carnival society "Karnevalsgesellschaft Die Isenburger Köln-Holweide 1974 e. V."

Timeline

  1. 1364
    First documented mention of Isenburg.
  2. 16. Jahrhundert
    Construction of the square brick tower.
  3. 18. Jahrhundert
    Addition of the three-storey classicist manor house.
  4. 19. Jahrhundert
    Construction of the outer bailey buildings in plaster and brick.
  5. 1983
    Sale of the castle to Bruno Wasser with extensive renovation.
  6. 1984
    Listed as a protected building on 3 July.
  7. 1985–2011
    Partial use of the castle as a restaurant.

Map

Blue dots: other places nearby — tap to explore.

You might also like — related or nearby

Gut Schlagbaum

4.5(10)· Google

A former moated castle in Holweide – only part of the outer bailey with a corner tower, gateway and an Adam-and-Eve relief survives; today a private residence and artists' domicile.

Haus Herl – Former Moated Castle with the Herl Mill in Cologne-Buchheim

Haus Herl is a former moated castle on the Strunde stream in the Cologne district of Buchheim on the right bank of the Rhine. Together with the Herl Mill it forms a listed heritage ensemble north of the Merheim Heath.

Genoveva Fountain

since 1914
4.7(6)· Google

A fountain in a Mülheim green space crowned by a life-size sculpture of Saint Genevieve with a child and a stag — the namesake of a street, a grammar school and a swimming pool.

Comments

  • Loading comments…

Sources & links

Auto-generated, last verified: 2026-09-08

How this page is made

This page draws on open sources — Wikipedia, Wikidata, official websites and the city’s open data. Every statement is checked against the sources linked here, and pages are refreshed regularly.

Spotted a mistake anyway? Tell us below — we read every submission.

Something missing or wrong?

Help us improve — suggest an edit or a new place.