Alphonse Balat’s most successful architectural project are the Royal Greenhouses of Laeken. It consists of a huge complex of several dome-shaped buildings in iron and glass that are connected by glass-roofed galleries.
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Famous is the royal botanic collection, with old plants from Africa and various species of flowers that are cultivated inside the royal greenhouses for use at court.
The royal complex can only be visited during a two-week period in April–May each year, when most flowers are in full bloom