Restoration of the Inner Garden

Feel the heartbeat of history
Inner Garden, photo Johan Staels

The Inner Garden of Gaasbeek Castle is currently undergoing restoration. During the summer, the works are on hold. They will resume in the autumn, with a festive reopening planned for spring 2027.

Over the past months, important steps have already been taken:
» the yew shapes have been pruned
» utility lines have been installed
» pathways have been restored
» the Lime tree has received care

In the autumn, work will continue with the restoration of the grass parterres, the replanting of Boxwood hedging, the planting of shrub roses, and the restoration of the fountain and well. The garden benches will also be repaired, and along the castle façades, trellis will be installed – as in the past – to support climbing plants. Just a little more patience: soon this magnificent garden will be yours to enjoy.
View of the west wing, photograph taken in 1917-1918 by a German art historian © Royal Institute for Cultural Heritage Brussels cliché b017864

The last green room...

After the thorough restoration of Gaasbeek Castle and the park buildings, there is one final area being carefully restored: the beautiful parterre garden in the courtyard. Thanks to extensive research directed by the Department of Culture, Youth & Media and the Flanders Heritage Agency, the Flemish public administrationis currently working on the restoration of this historic garden so that it may soon shine once again. Both administrations were supported in this by the Agency for Facility Operations, in-house expertise and external craftsmanship.

Marquise Arconati Visconti’s parterre garden

Garden art historian and landscape architect Ann Voets from Halle delved deep into the rich castle archives and numerous other repositories. She found plans, glass plates, sketches and even press cuttings that provide a clear picture of how Marie Peyrat, also known as marquise Arconati Visconti, had her harmonious garden laid out. They revealed that the garden was designed in neo-Renaissance style around 1890, inspired by drawings by the renowned 16th-century architect Hans Vredeman de Vries. The result was an ingenious, seemingly symmetrical yet austere design, whose balanced proportions were miraculously preserved.

Anonymous ground plan of the Inner Garden with fountain designed around 1890 © Gaasbeek Castle Archives
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Fragments of brick aggregates and rolled pitch or coal tar layer with cross-section of the garden paths in the courtyard garden © Heritage Flanders Agency

Archaeological survey reveals hidden layers

In addition to the historical research, excavation work was also done. Archaeologists from the Flanders Heritage Agency, led by Geert Vynckier, together with experts Brian Dix and Roland Dreesen, investigated the ancient garden paths and the parterres’ edging. Test trenches and soil samples revealed surprising details; for instance, the maintenance paths were once covered with orange-red brick aggregates, and the main paths consisted of a rolled asphalt-like layer, which may or may not have been finished with gravel. Drone footage and measurement plans recorded every detail.

“In Gaasbeek, the former garden paths were laid with a granular material, rolled or rammed and bonded into a solid mass, using asphalt or a substitute, with pitch or coal tar, on which may have been subsequently spread a top layer of gravel.” - Brian Dix (British garden archaeologist)

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1: Material technical study of the Beaune-Semblançay fountain replica © Lapis Arte
2: Design proposal for restoration of espalier fences, suspended from partially preserved hooks and overgrown with Japanese vine © Thomas x van Meer

Fontain and  espalier fences

All findings are reported in detail, providing a clear picture of the original garden and its additions over time, including those made following the Expo ’58. For the purposes of an expert restoration, the replica of the famous Beaune-Semblançay fountain from Tours, along with the well, was also examined by the Lapis Arte company from Oosterzele, under the direction of Emilia De Rijcke. Finally, the traces of the former espalier fences, the elegant wooden trellis that used to hang from the castle walls, have been meticulously mapped.

Restoration plan breathes new life into Inner Garden

Meanwhile, the team led by Stijn Thomas and Hannes van Meer from Hasselt is working on the restoration plan, under the authority of the Agency for Facility Operations. The more than 120 pruned yews – the graceful topiaries that shape the space like green sculptures – will still be the heart of the courtyard garden.

“By preserving the pruning forms, the evolution, age and wild growth of the plants will be highlighted.”
- Ann Voets (Flemish garden art historian and landscape architect)

The deteriorated boxwood hedges will be replaced entirely with a durable, disease- and pest-resistant variety. A specific shrub rose type will add a splash of colour again, with a nod to the period around the Expo ’58. The current crushed bluestone will be removed, giving way to a more accessible white-beige, semi-paved area. The maintenance paths will regain their original orange-red brick aggregates. The flowery grass parterres, boasting some rare herbs, will be preserved to the utmost extent.

It will also be examined whether the fountain and well can be restored at this stage, and whether the original espalier fences can return, this time overgrown with ornamental Japanese vines.

Mise en scène with Marie Peyrat, marquise Arconati Visconti, ca. 1900-1913 © Musée d’Orsay Paris, Dist. RMN-Grand Palais / Alexis Brandt, cliché PHO 1997 8 2 13

Garden and castle soon to be reunited into an enchanting whole

If everything goes according to plan, you will soon be able to walk through a garden that once again exudes the ambience of yesteryear, but with respect for its evolution and natural growth. In turn, the castle and the courtyard garden will form a single, magnificent whole, a true Gesamtkunstwerk that blends architecture, sculpture and nature. The Renaissance character is preserved and corresponds to Marchioness Arconati Visconti’s fondness for this period.

We look forward to welcoming you to this green room soon and hope the garden will enchant you as it did the Marchioness herself.

More information

» Garden archaeological research, Geert Vynckier (ed.): https://publicaties.vlaanderen.be/view-file/54063 
» Monumenten & Landschappen, volume 44, number 1 (January/February 2025): on sale in the Museum Shop

Preliminary studies

» Garden history / Ann Voets, Halle, on the authority of the Department of Culture, Youth & Media and the Flanders Heritage Agency
» Garden archaeology / Flanders Heritage Agency under the direction of Geert Vynckier in cooperation with Brian Dix and Roland Dreesen
» Fountain and well / Lapis Arte, Oosterzele, under the direction of Emilia De Rijcke on the authority of the Agency for Facility Operations
» Restoration specifications / Thomas x van Meer, Hasselt, under the direction of Hannes van Meer and Sandrine Peulen on the authority of the Agency for Facility Operations

Initiative

Department of Culture, Youth & Media – Gaasbeek Castle (Isabel Lowyck) and Flanders Heritage Agency (Peter De Wilde)