Tusculum Residence is the result of a contemporary renovation and addition to an early 20th-century terrace house in Sydney, Australia. The project was envisioned by Smart Design Studio and combines a classic style with a modern approach. According to the architects, an important element of the renovation project is a “grand and gracefully spiralling stair that forms the pivotal junction of the old and new parts of the house. The staircase, spanning the width of the building, features delicate fan-like steel treads cantilevered from the central steel post and winding their way past six split levels, offset between the old and new sides of the house. The stair was conceived as the element that grafts the contemporary and new minimal structure to the refined, trimmed and formal older portion of the dwelling“. How do you find this association between two building sections that are completely different in style?