From a medieval core, remodelled in the 17th century during the Renaissance, a pointed-arch courtyard gate with stone surround and family crest leads onto the street. The stone archway features the letter "A" with an arrow as a bar. Above the front door is a coat of arms in stone consisting of three wavelike curving lines and the initials "L.H.". The ribbed vault and shouldered-arch doors date from 1500; the stone-framed rectangular and double-arched windows, as well as a bay on the façade, are from the 17th century.