a new order | botanic sanctuary antwerp

Sanctum. photography. Caterina Stahl

Set within a restored medieval monastery beside the Plantentuin botanical garden, Botanic Sanctuary Antwerp has quietly assembled one of the most notable collections of restaurants in Europe, several of them Michelin-starred. Now the hotel turns the page again. At the heart of the estate, two new dining rooms have opened under the direction of Yves Mattagne, one of Belgium’s most celebrated chefs, who held two Michelin stars at Brussels’ legendary Sea Grill. They are Sanctus, an intimate room built around ritual, and Hidden Garden, its worldly, all-day counterpart. Both are shaped by the same setting: walls that have stood for centuries, and a kitchen intent on honouring them.

Mattagne arrives in Antwerp with a reputation built over four decades, and largely at a single address. Born in 1963, he trained at the Hilton International before a rise to head chef in London, and a formative stint at the Parisian seafood house Divellec. But it was Sea Grill, the Brussels dining room he took over in 1990, that made his name. He won its first Michelin star within a year and a second by 1997, then held both for more than two decades, a rare run of consistency that turned the restaurant into shorthand for Belgian fine dining. He later bought Sea Grill outright, and remained there until it closed in 2019, before reviving the grand La Villa Lorraine and winning back its two stars almost the moment it reopened.

left. Sanctum. photography. Caterina Stahl. right. Hidden Garden. photography. Pieter D’Hoop

It is telling, then, that a chef of his standing has chosen Botanic Sanctuary as the place to begin his next chapter. Mattagne works alongside chef Charles Broutard, who runs both new kitchens day to day. Together they join a hotel that already keeps rarefied company: the two-starred Hertog Jan, the one-starred Fine Fleur, the all-day Bar Bulot and a new afternoon-tea ritual from pastry chef Roger van Damme at The Gingerbread House. With Sanctus and Hidden Garden joining that roster, Botanic Sanctuary becomes the only hotel in Belgium to hold three Michelin stars on a single site. For a chef drawn equally to ceremony and reinvention, it is an unusually sympathetic home.

The two restaurants are best understood as a pair, pulling in opposite directions from the same hand. Sanctus is the contemplative of the two. Set in one of the monastery’s most atmospheric spaces, it serves a single tasting menu and seats just one table a night. With no à la carte to navigate, the evening rests entirely in the kitchen’s hands. The chefs remain present throughout, finishing dishes at the table in full view, dissolving the usual walls between kitchen and dining room. What arrives leans on Mattagne’s first love: the Belgian seafood of his Sea Grill years, reimagined in a lighter, more surprising register – a recent menu featured Eastern Scheldt Lobster with ponzu butter and grapefruit – and changing from one month to the next.

left. Hidden Garden. photography. Pieter D’Hoop. right. Sanctum. photography. Caterina Stahl.

If Sanctus turns inward, Hidden Garden looks out. Here the essence is communal, a space where locals and travellers can linger over the same long lunch, and its menu carries the imprint of a lifetime’s travelling. Shaped by years in Japan, Thailand and further afield, his cooking carries those flavours home to Belgian produce. The result is a kitchen fluent across cultures. The all-day menu ranges widely: finger food such as Crispy Avocado with shichimi and ghoa cress, or Smoked Eel and Foie Gras Rice with miso and nori; from the reef, Baby Lobster with dan-dan butter and fried garlic; and, for comfort, there is White Dune Asparagus, Flemish-style, and a plate of North Sea Grey Shrimp Croquettes. The theatre Mattagne loves runs through all of it: whole Royal King Crab from the Bering Sea, Imperial Gold Caviar service, Beef or Balfegó Bluefin Tartares cut at the table. Anchoring the mains is a Sea Grill favourite: Roasted Turbot on the Bone. Through summer, an outdoor kitchen carries the experience onto a terrace in the hotel’s monastery garden.

left. Hidden Garden. photography. Pieter D’Hoop. right. Yves Mattagne. photography. Caterina Stahl.

For all the technique, Mattagne insists the cooking is only ever half the story. “I want people to feel something – not just eat,” he says. “The food is important, yes, but what makes a restaurant today is the service, the atmosphere, the conversation. I want every dish to have a history. I want guests to see the preparation, to be part of it. The experience is the whole thing.”

It is a philosophy the setting has been anticipating. Antwerp already holds more Michelin starred restaurants than any other city in Belgium, and among the most per head anywhere; Botanic Sanctuary has simply gathered that ambition under one roof. “Our vision has always been to bring together exceptional hospitality, heritage and haute cuisine,” says Roy Tomassen, the hotel’s managing director, who calls Mattagne’s creativity and international outlook “a perfect match” for the estate’s ambitions. In a monastery built centuries ago for devotion, his two rooms now ask their guests to slow down, pay attention and treat the table as something close to sacred.

Sanctum. photography. Caterina Stahl.

Read more about Botanic Sanctuary Antwerp in issue 1 of Schön! alive.

words. Olivia Cichero
edit. Huma Humayun
photography. Caterina Stahl + Pieter D’Hoop