Seminarzentrum Villa Garbald in Castasegna was built between 1863 and 1864 based on the plans of famous architect Gottfried Semper. It is the only building Semper designed south of the Alps. Since 2004 it is used as a seminar centre.
Villa Garbald was completed in 2004 with the addition of the “Roccolo'' tower by Miller & Maranta. The six-storey extension building contains a lecture room for 25 people on the ground floor and ten bedrooms on the upper floors.