royal greenhouses at laeken, brussels, belgium, composed of a complex of a number of greenhouses including the congo greenhouse

agency alphonse architecture art balat belgian belgium botanical botany brussels bruxelles building buildings castle collection complex congo construction destination dome estate europe flanders flora glass green greenery greenhouse greenhouses heated historic iron king koninklijke laeken laken landmark leopold metal monarchy neoclassical nouveau orangery palace pavilion royal royales serres spring springtime steel structure tourism tourist trust van