Secreted in a hidden corner of the newly renovated Chicago Athletic Association Hotel, the historic Cherry Circle Room has gained a new lease on life. Thanks to Land and Sea Dept. — the restaurant group responsible for such contemporary dining landmarks as Longman & Eagle and Parson’s Chicken & Fish — the more-than-century-old space now seamlessly blends homages to its storied past with a very modern sense of style.In a bygone era, the windowless room, lined in rich leather and dark wood, bore …