The Hôtel Solvay is a large Art Nouveau town house designed by Victor Horta on the Avenue Louise in Brussels. The house was commissioned by Armand Solvay, the son of the wealthy Belgian chemist and industrialist Ernest Solvay. For this wealthy patron Horta could spend a fortune on precious materials and expensive details. Horta designed every single detail; furniture, carpets, light fittings, tableware and even the door bell. He used expensive materials such as marble, onyx, bronze, tropic woods etc. For the decoration of the staircase Horta cooperated with the Belgian pointillist painter Théo van Rysselberghe. The Hôtel Solvay and most of its splendid content remained intact thanks to the Wittamer family. They acquired the house in the 1950s and did the utmost to preserve and restore this magnificent dwelling. The house is still private property and can only be visited by appointment and under very strict conditions. The edifice is on the UNESCO World Heritage List.
The UNESCO commission recognized the Hôtel Solvay as UNESCO World Heritage in 2000 as one of the Major Town Houses of the Architect Victor Horta.
References:The Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.