Hidden Art Nouveau gems in Brussels: beyond Horta
Brussels: Brussels Art Nouveau Walking Tour with a Local Guide
What are the lesser-known Art Nouveau sights in Brussels?
Beyond Horta, seek out Maison Cauchie (a sgraffito-covered façade near the Cinquantenaire), Maison Saint-Cyr (a flamboyant narrow iron façade on Square Ambiorix), the Old England/MIM building, the Comics Art Museum (a free Horta interior), Hôtel Hannon, and the sgraffito-rich streets of Schaerbeek and Saint-Gilles.
Brussels is one big Art Nouveau treasure hunt
Everyone who digs into Brussels’ Art Nouveau finds Horta first — rightly. But the movement spread far beyond him, and the city is studded with lesser-known masterpieces, dazzling façades and gloriously decorated interiors that most visitors never notice. This guide is for the second-day explorer who’s already done the Horta Museum and wants more. Bring a camera and learn to look up.
Art Nouveau swept Brussels between roughly 1893 and 1914 — a period of two decades in which the city remade itself architecturally, street by street. Horta was the pioneer, but his open approach to design and his willingness to teach meant that dozens of architects absorbed his innovations and applied them across the city. The result is a vast, distributed collection of decorated townhouses, commercial buildings and public structures — not a museum but a neighbourhood experience, most of it free.
The hidden architectural gems
Maison Cauchie
Near the Parc du Cinquantenaire, the home of painter Paul Cauchie is a single overwhelming façade of golden sgraffito — elegant Art Nouveau muses scratched and painted across the whole front. Cauchie was primarily a decorative artist rather than an architect, and his house shows what happens when a painter designs his own building. Open only a few days a month, but worth timing for; the exterior is free and astonishing from the pavement. The house is at Rue des Francs 5 — note it down before you go, as it’s easy to walk straight past.
Maison Saint-Cyr
On Square Ambiorix, this absurdly narrow (4-metre-wide) townhouse explodes upward in a riot of curling wrought iron — arguably the most flamboyant Art Nouveau façade in the city. Designed by Gustave Strauven in 1901 for the painter Georges de Saint-Cyr, it’s a deliberate show-off: every surface covered in organic ironwork, the balconies overlapping in ascending tiers of excess. Exterior only, but unforgettable. The surrounding Square Ambiorix and Square Marie-Louise have a further string of Art Nouveau townhouses that reward a slow walk.
The Old England building (MIM)
A black iron-and-glass former department store on the Mont des Arts, now the Musical Instruments Museum — a rare Art Nouveau interior you can enter on a normal ticket, topped by a rooftop café with a city view (MIM guide). The facade is Art Nouveau in a notably different register from the organic curves of Horta — more structural, more influenced by English Arts and Crafts — which makes the comparison interesting.
Comics Art Museum (free Horta interior)
The Belgian Comic Strip Center occupies Horta’s 1906 Waucquez warehouse — so visiting the comics museum doubles as walking through a genuine Horta interior, with the famous staircase and glass (Comic Art Museum guide). One of the best-value Art Nouveau experiences in town, because you get the architecture and a major collection for the price of one museum ticket. The large central atrium, with Horta’s characteristic iron-and-glass rooflight flooding the space with diffused natural light, is alone worth the entry.
Hôtel Hannon
A graceful corner mansion in Saint-Gilles, with Art Nouveau detailing inside and out; check current opening/exhibition access. Built in 1902 for Edouard Hannon, an amateur photographer, it has an interior that includes extraordinary tiles and ironwork — one of the more complete surviving Art Nouveau domestic interiors in the city.
The art of sgraffito
Once you know the word, you’ll see it everywhere. Sgraffito — designs scratched into layers of coloured plaster — adorns the upper façades of countless Brussels townhouses, especially in Saint-Gilles, Ixelles and Schaerbeek. Floral panels, female figures, golden flourishes: a free, citywide gallery hiding in plain sight above the shopfronts. The technique works by applying multiple layers of differently-coloured plaster, then scratching away the top layer while still damp to reveal the colour beneath. At its best, a sgraffito panel has the warmth and depth of an oil painting applied to a building.
The trick is simply to look up as you walk (walking route). The ground floors of many townhouses have been modernised — shops, cafés, banks — while the upper floors retain the original decorated plaster intact above the signage. Brussels has hundreds of these panels; spotting them becomes a reflex that transforms a walk into a game.
Neighbourhoods to wander
- Schaerbeek — sometimes called the “city of Art Nouveau,” its streets (around Avenue Louis Bertrand and the surrounding grid) are thick with decorated façades, yet barely touristed. The area is genuinely residential and far from the centre; set a half-day aside and explore at leisure. The Saint-Servais neighbourhood has particular concentrations.
- Saint-Gilles & Ixelles — the Horta heartland, dense with gems beyond the famous houses (Saint-Gilles guide). The streets around the Horta Museum — Rue Africaine, Rue de la Victoire, Avenue Brugmann — are the richest hunting ground.
- Squares Ambiorix and Marie-Louise — elegant townhouses around landscaped ponds, where Maison Saint-Cyr is the star but the neighbours aren’t ordinary either.
Art Nouveau cafés and bars
Some of the best Art Nouveau interiors in Brussels are drinking establishments:
- À la Mort Subite — a surviving Art Nouveau café near the Galeries Royales, with a long zinc bar, mirror walls, and bentwood furniture that hasn’t changed since the 1920s. The space is as important as the beer.
- Falstaff — a grand Art Nouveau brasserie near the Bourse, with original glasswork and woodwork; more elaborate and flashier than À la Mort Subite.
- Le Cirio — a Belle Époque interior by the Bourse; technically transitional rather than pure Art Nouveau, but the ambience is of a piece with the era.
How to find them
These are scattered and many are exterior-only, so a knowledgeable guide pays off. A local-led Art Nouveau walk or a fuller 3-hour Art Nouveau tour will surface details you’d never spot alone, and a general hidden-gems tour weaves Art Nouveau into the wider offbeat city. Or just go DIY with this list and the walking route — wandering, looking up, and discovering for yourself is its own quiet pleasure, and one of the most rewarding ways to spend a Brussels morning.
Frequently asked questions — Hidden Art Nouveau gems in Brussels: beyond Horta
What is sgraffito and where can you see it in Brussels?
Sgraffito is a decorative technique of scratching designs into coloured plaster, common on Art Nouveau façades. Brussels has hundreds of sgraffito panels, especially in Saint-Gilles, Ixelles and Schaerbeek — look up at the upper façades of townhouses for golden, floral and figurative murals.Is the Comics Art Museum building Art Nouveau?
Yes — the Belgian Comic Strip Center (Comics Art Museum) is housed in Victor Horta's former Waucquez textile warehouse, a stunning 1906 Art Nouveau building. Visiting the comics museum is a free way to experience a genuine Horta interior.
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