The new research building at the Hospital de la Santa Creu i Sant Pau has been constructed within the hospital complex. The connection via a walkway on the second floor facilitates the flow of people between facilities.

It consists of a large metal structure of bars in a spiral tube shape that connects the two buildings and is covered by a perforated membrane.

The perforated fabric is see-through both from inside and outside the walkway.

The walkway's DNA, with its double helix spiral, is conveyed exceptionally well by the continuous single-piece membrane.