Located in the historic city of Santiago de Compostela, the interior of this 18th-century Spanish townhouse was transformed by local architect firm, Arrokabe Arquitectos to create a modern and contemporary style complete with a wave-shaped ceiling and floating staircase.

The architects left the building’s street-facing exterior intact, but completely renovated the interior with new timber framed doors and wall partitions. The townhouse is comprised of three stories, including a smaller loft level. The first floor encompasses a guest suite, while the ground floor accommodates an extra bedroom, a dining room, a lounge and a separate kitchen.

The most dramatic feature of the new interior is the staircase installed to replace the old one, that connects all four levels and appears to be floating. It begins as a solid structure but changes form as it ascends the floors of the home. Distinct design features can be found on all four levels which include storage areas, bookshelves, low cupboards and hollow benches. The finished Spanish townhouse provides an ideal blend of elegance and practicality, creating the perfect home for a family of five. [Photography by Luis Díaz Díaz]

What do you think of this 18-century transformation complete with floating staircase?