The Wintertuin van de Ursulinen (Winter Garden of the Ursulines) Garden is a real Art Nouveau gem. The garden is Belgium's largest Art Nouveau site open to the public.

The winter garden, with its colourful stained-glass dome dating from 1900 - whose architect remains unknown - is part of a monumental building complex where education, architecture, art and history come together.

The Winter Garden was part of the Ursulineninstituut, a former international boarding school for girls. This “Pensionnat de demoiselles” was a centre for girls' education. Thanks to its green location, well-maintained buildings and excellent educational provision, it became a boarding school of international renown. Around 1900, almost a quarter of the pupils came from abroad.

The Wintertuin has been a listed building since 1987 because of its historical, artistic, and architectural value.