The motto “To every age its art, to every art its freedom" appears above a building in this city designed by Joseph Maria Olbrich. For 10 points each:
[10e] Name this capital city, leading members of whose 20th-century “secession” included architects such as Otto Wagner and Josef Hoffman, as well as the painter Gustav Klimt.
ANSWER: Vienna [or Wien; accept Vienna Secession or Wiener Secession]
[10m] Wagner designed “Majolica” and “Medallion” examples of this kind of building in the Vienna Secession style. Four late 19th examples of this kind of building designed by Victor Horta form a World Heritage Site in Brussels.
ANSWER: houses [or townhouses or apartments or flats; accept hôtels]
[10h] This Viennese-born architect, who became a citizen of New Zealand in 1983, designed a namesake apartment building in Vienna featuring a grass-covered roof and trees growing within rooms.
ANSWER: Friedensreich (Regentag Dunkelbunt) Hundertwasser [or Friedrich Stowasser; accept Hundertwasserhaus]