How can I design a staircase that incorporates interlock stairs for a modern and space-saving aesthetic?

To design a staircase with interlocking stairs for a modern and space-saving look, consider using alternating tread or spiral staircase designs. These types of stairs can provide a sleek and contemporary appearance while maximizing space efficiency. Additionally, using materials like glass, metal, or wood with a minimalist design can enhance the modern aesthetic of the staircase.