The Hotel Tassel (French: Hôtel Tassel, Dutch: Hotel Tassel) is a town house built by Victor Horta in Brussels for the Belgian scientist and professor Emile Tassel in 1893-1894. It is generally considered as the first true Art Nouveau building, because of its highly innovative plan and its ground breaking use of materials and decoration. Together with three other town houses of Victor Horta, including Horta's own house and atelier it was put on the 'UNESCO World Heritage List' in 2000. It is located at 6, Rue Paul-Emile Jansonstraat in Brussels.