render a majestic three story classical mansion with a highly detailed facade the exterior walls should be pristine white highlighting the architectural elements the roof should be flat with a dark grey color complementing the white walls large elegant windows with black frames and wrought iron railings adorn the building adding a touch of sophistication the front entrance features grand arched double doors in a rich dark wood or black color accent the structure with ornate columns and decorative moldings all in pristine white surround the mansion with a well manicured lawn in a vibrant green extending to the horizon set against the backdrop of a clear blue sky and distant rolling hills the driveway and walkway should be paved with dark grey cobblestones leading up to the grand entrances add subtle lighting fixtures in a classic style near the doors finished in black to match the window frames create a serene luxurious atmosphere that exudes both grandeur and tranquility reflecting the elegance of classical architecture amidst the calm of a picturesque landscape architecture