Built by industrialist and art collector Friedrich (Fritz) von Gans in 1909, this is the largest family mausoleum in the Central Frankfurt Cemetery. It was designed by Friedrich Christoph Hausmann based on the Tempietto found in the Church of S. Pietro in Montorio in Rome.
Salviati decorated the interior of the dome with a dark, mosaic night sky, including dozens of golden stars.
Barr, Sheldon. Venetian Glass Mosaics: 1860-1917. London: Antique Collectors' Club, 2008. 136.
S. Ruehlow's flickr Photostream
Wikipedia von Gans