The artist Olafur Eliasson is making a “fog” installation for an art playground on the grounds of the Ordrupgaard Museum in Charlottenlund, Denmark, north of Copenhagen. The piece, which is due to be unveiled in May, will surround visitors in mist, encouraging both children and adults to experience art more freely than usually possible in a museum setting, says the museum director Anne-Birgitte Fonsmark. A water pavilion by Jeppe Hein, a tea house by Terunobu Fujomori and a bamboo construction by Doug and Mike Starn will also be installed in the playground.