As a form of respect for his generosity, the idea to build a Mausoleum; a majestic tomb monument, was emerged from his wife, Lim Sha Nio.

[6][8] The mausoleum was designed in the Art Deco style by Giuseppe Racina, an Italian architect and contractor living in nineteenth-century Surabaya, Dutch East Indies.

[1] When the mausoleum was completed and inaugurated on September 4, 1932, its astronomical cost from f 500,000 (around US$250,000 at the time; or US$4.5 million in today's money) to f 2.000.000 (or IDR 3 billion),[6][8] which caused a sensation among the press of colonial Indonesia and the Netherlands.

[9][10][11] One commentator noted that Khouw's mausoleum was considerably more expensive than the burial memorial of American billionaire, William Rockefeller Jr. (1841 – 1922), in Sleepy Hollow, New York.

[6] After decades of neglect, the mausoleum attracted the attention of heritage lovers in Jakarta in recent years, who now maintain the site in good order.

Khouw has an Art Deco architectural style designed by the Italian architect, Giussepe Racina who once lived in Surabaya in the early 20th century.