Marcel Breuer isn’t just the architect behind the original Whitney Museum of Art–he’s also known for his mid-century modern home designs. And now there’s an incredible chance to buy the New Canaan, Connecticut home he actually designed for himself in 1951. The striking home has changed hands several times after Breuer’s death, according to DesignBoom. But the current owner commissioned New York-based architect Toshiko Mori to extend the property. A steel and glass extension gives the property a modern edge, which also doubling its size to four bedrooms over 5,577 square feet. It’s asking $4.35 million.