First time ever on the market! Eighteen years after finishing construction, the only owners of this exquisite, custom-built, Hyde Park single-family property have decided to sell their dream home. Designed by well-known Chicago architect Scott A. Rappe, this home is like no other in the community, starting with its stunning curb appeal. The angular curved brick and limestone facade, accented by mahogany and weathered zinc elements, makes a uniquely modern architectural statement, while still fitting in beautifully with the historic surrounding homes of this very special block. The welcoming approach to the house provides an extra wide limestone path through a landscaped garden to a bluestone terrace spanning the entire front facade. The gracious interior, marked by its many curved walls and wide imposing staircases, has an expansive open floor plan, providing a seamless interconnectedness of multiple spaces of over 6000 square feet on all four levels. Soaring ceilings and walls of windows with stunning views let in an abundance of natural light throughout. All of the finishes are of the highest quality, from the Loewen and Marvin windows, to the mahogany trim and cherry floors. The expansive living room, spanning the front of the main floor, provides a full wall of windows showcasing the handsome historic homes of this quiet tree-lined street. The absolutely stunning great room is clearly the centerpiece of the home, its 25-foot-high wall of windows bringing in an imposing and ever-changing living portrait of the natural world outside. The great room is open to the gourmet state-of-the art chef's kitchen, with Wolf (range, wall, warming ovens), SubZero (full plus two drawers), and Miele appliances, abundant cabinetry, a full walk-in pantry, and a separate eating area. A convenient and very useful mudroom with sink provides abundant additional storage and a functional transition from the back yard / garage. A cozy oval dining room provides an intimate space for more formal gatherings. A private office completes the main level and could easily function as a first floor bedroom if needed. Upstairs are four good-sized bedrooms, each with ensuite full baths. The private primary suite is truly a sanctuary, with separate sitting room, fully equipped spa bath with double vanity, and two walk-in closets. The lower level, with 9-foot ceilings, is fully integrated into the upstairs spaces, with a large recreation room, separate fitness room, and a full-sized bedroom with ensuite bath. The mechanical rooms display the myriad technical advances found in this home, including: radiant heated floors throughout, advanced lighting systems, a full-house fire-suppression system, a whole house central vacuum system, and 6-zoned distributed audio throughout (including the back yard). Out back, among the professionally maintained trees and plantings, is a quiet seating and dining area and an impressive brick 3-car heated garage. Prime location, within easy walking distance of the University of Chicago campus, as well as the shops and restaurants of 53rd Street. Truly a one-of-a kind property.