The price for the only Philip Johnson house in Dallas, on the market since 2014, has dropped by $8 million, according to the Houston Chronicle. Built in 1963, the 11,000-square-foot house on Strait Lane has six bedrooms, a media room and a tennis court on six acres. While most of the real estate market is rollin’, the market for high-end luxury real estate remains in decline. With the Johnson house, it’s like trying to sell a work of art you can live in. First listed at $27.5 million five years ago, it’s now just $19.5 million.

One of the most architecturally significant homes on Strait Lane is included in a new biography about its architect, Philip Johnson, by Dallas Morning News architecture critic Mark Lamster.

“The Beck House is the one that’s modern, whereas most of the ones around there are fake French chateaux or fake colonial mansions,” says Dallas Morning News architecture critic Mark Lamster, author of “The Man in the Glass House: Philip Johnson, Architect of the Modern Century.” “It is the effigy of opulence. It’s so Dallas, and it’s perfect. It’s beautifully made, and it’s a wonderful space to be in.”