620 Siena Way is an iconic Bel-Air property designed by the original owner, Los Angeles contractor Arthur S. Bent, and the famous American architect Gordon Kaufmann. Built in 1926, it was one of the first properties in Bel Air, an English Tudor estate with more than an acre of lush nature surrounding it. This trophy from the glittery past of Los Angeles is listed for $43 million. The home is unique in every respect, and like all of Kaufmann’s designs, it was meant as a place to entertain on a grand scale, both inside and outside. There are eight bedrooms, eight full baths, and four half baths in the 8,799-square-foot home. The formal living room is a good example of Kaufmann’s style, with its high beamed ceiling and grand stone fireplace. The mansion has a formal dining room, a gourmet kitchen, a library, and a three-car garage. The landscaping at …