Maison Horta was one of the early buildings in the new sim called Babbage Canals when it appeared in May 2007. Horta later moved to the Palisades in order to take advantage of the double prim allocation, it’s old location was filled with the Janus Industries factory.
Based upon the real life home of Art Nouveau architect Victor Horta which can still be visited in Brussels.
some early images can be found here. The oldest date back to the start of the building process. A few others are from about 2009.