Within three years, he assembled the largest collection of Rodin's works outside Paris, including bronze castings, plaster studies, drawings, prints, letters, and books.

In 1926, Mastbaum commissioned French architects Paul Cret and Jacques Gréber to design the museum building and gardens.

Visitors once entered through a cast of The Gates of Hell, located at the main entrance to the museum, which is no longer used.

This massive 5.5-m-tall bronze doorway was originally created for the Museum of Decorative Arts (which was to have been located in Paris but never came into existence).

[5] The special exhibition featured bronze sculptures by Jean Arp, Barbara Hepworth, Jacques Lipchitz, Marino Marini, Chana Orloff, and Alberto Giacometti, among others.