The Ketelhuis, the Schoonmakerij and the new Silotoren building are to be transformed into one special ensemble. The three buildings will be linked horizontally as a mixed-use space. Azzurro Wellness will occupy the first three floors. The swimming pool adjacent to the ground floor will serve as a connecting element with the Singel canal.

Overzichtsplattegrond De Meelfabriek in Leiden Ketelhuis en Schoonmakerij
Overview of De Meelfabriek

The fourth floor will be dedicated to Art & Culture, with flexible spaces for art exhibitions, film screenings, seminars, workshops and other events. In the Schoonmakerij, the floors above this will provide office space for companies that complement the intended uses of these buildings.

plattegrond van Art Center in de Silotoren, Ketelhuis en Schoonmakerij. Art center van De Meelfabriek in Leiden
Artist’s impression of 4th-floor layout - Art & Culture
plattegrond Wellness De Meelfabriek in Leiden, wellness, beauty, Azzurro
Artist’s impression of ground-floor layout - Wellness and Beauty


The former Ketelhuis (boilerhouse) is the oldest building in De Meelfabriek, dating back to 1896. Steam engines were used here until the 1920s, when the advent of electricity rendered them redundant, and the space was then filled with compressed air compressors. The building is now entering the next phase in its history and is being redeveloped to make it suitable for new uses. These include Azzurro Wellness and, on the top floor under the arched roof, there will be an intimate film theatre.

Because of its architecture and cultural heritage value, the Ketelhuis is considered to be a perfect example of a utility building with exceptional detailing and an early application of concrete and iron construction technology. It is now a rare example of a building from the early days of concrete construction combined with an iron skeleton. The concrete barrel vault of the roof is to be reinforced every three metres by iron sections that echo the shape of the arch.


As its name suggests, the Schoonmakerij (washhouse) – a listed building dating from 1937 – was once used to wash grain. The building has characteristics of the Nieuwe Bouwen school of modernist architecture and the sober expressionist style known as Zakelijk-Expressionisme. With its concrete frame structure of beautiful concrete columns and beams, the Schoonmakerij will be transformed into a space for wellness, art & culture and offices.

Plans are currently being finalised with a team of construction project managers and architects for both interior and exterior, in collaboration with Azzurro Wellness.

Specifications, prices and registration form now available.