An extensive Himalayan art collection that belonged to the late Democratic Sen. Dianne Feinstein and her husband, Richard Blum, is set to be auctioned off on March 20 in New York.

“Accumulated over a 30-year period, the 42 works on offer worth more than $3 million from the prominent couple’s collection are representative of the breadth and diversity of their taste, spanning 800 years from Tibet, Nepal, and Greater China,” according to a release from auction house Bonhams.