Sights. The Royal GreenhousesEvery year, for a few weeks only, the Royal Greenhouses of Laeken are open to the public. Make sure to visit, as the art noveau is as amazing as the plants.HallerbosTis the season! No, it isn't Christmas - it is the season for the magnificent Hallerbos just on the outskirts of Brussels! Go and see the amazing Bluebells!Free 360° ViewsFrom the arch in Parc Cinquantenaire you will get stunning 360 degree views of Brussels. Best of all: It's free! Here is how you get up there ...Horta-Lambeaux PavillonIn a city filled with Victor Horta's legacy, this work of his is bound to be overlooked: After all, it's not one of the famous huge art nouveau townhouses.Coloma Castle & Rose GardenFrom the middle of May to the end of September, the rose garden around the Coloma castle is open to visitors - free of charge! In one word: It's idyllic.Chalet RobinsonIn the middle of the Bois de la Cambre, you will find a little island - and on it the Chalet Robinson. There is even a little boat that will take you there.