This attractive double-fronted mansion replaced two semi-detached houses dating from the last quarter of the 18th century. It was built to plans drawn up in 1911 by Armand Delalieux, the architect of various Art Deco buildings in Brussels. In this instance, a neoclassical style was chosen to match the surrounding buildings around Parc de Bruxelles/Warandepark. Completed in 1912 (as indicated on the façade), the mansion was made available to Belgian Minister for Foreign Affairs Paul Hymans, before becoming the residence of the Swiss Ambassador to Belgium. Fully renovated between 2019 and 2021, the building has a number of reception rooms including a meeting room decorated with leafy Cordoba leather panels dating from the 18th century.