Casa Batllo, by Antoni Gaudi, at Barcelona, Spain, 1905 to 1907.

Casa Mila, by Antoni Gaudi, at Barcelona, Spain, 1905 to 1910.

Castel Beranger, by Hector Guimard, at Paris, France, 1890 (circa).

Glasgow School of Art, by Charles Rennie Mackintosh, at Glasgow, Scotland, 1897 to 1909.

Hill House, by Charles Rennie Mackintosh, at Helensburgh, Scotland, 1902 to 1903.

Horta House, by Victor Horta, at Brussels, Belgium, 1898.

Hotel Guimard, by Hector Guimard, at Paris, France, 1912.

Hotel Solvay, by Victor Horta, at Brussels, Belgium, 1895 to 1900.

Hotel van Eetvelde, by Victor Horta, at Brussels, Belgium, 1895 to 1898.

Majolica House, by Otto Wagner, at Vienna, Austria, 1898 to 1899.

Paris Metro Entrances, by Hector Guimard, at Paris, France, 1899 to 1905.

School in Glasgow, by Charles Rennie Mackintosh, at Glasgow, Scotland, 1904 to 1906.

Sezession House, by J. M. Olbrich, at Vienna, Austria, 1896.

Tassel House, by Victor Horta, at Brussels, Belgium, 1892 to 1893.

The Willow Tea Rooms, by Charles Rennie Mackintosh, at Glasgow, Scotland, 1902 to 1904.

Werkbund Theater, by Henry van de Velde, at Cologne, Germany, 1914.

Whitechapel Art Gallery, by C. Harrison Townsend, at London, England, 1897 to 1901.