"Good design is timeless," reads the brokerbabble for this Upper East Side mansion, which actually has the bona fides to back up its claims: It was built in 1940 and designed by William Hamby and George Nelson, and the exterior was later updated by noted postmodern architect Michael Graves. But whether or not you consider this good design depends on how much you enjoy the quirky design, which includes ramps connecting several of its floors; a "great room" that's lit from above by a huge skylight; and a study with plenty of shelf space. The home first went on the market for $40 million in 2014, but was delisted earlier this year; strangely, the price hasn't been cut at all, suggesting that the current owner is really sure that the architectural prowess behind the home will help it move. (We'll see about that.) It has five bedrooms, six bathrooms, a wine cellar, and a gallery—created, presumably, for the fancy art that its owners, French and Company (a fine-art dealership), had to display.