Santiago Calatrava has always integrated elements from nature into his architecture. Pillars support the roofs like trees branching overhead, entrance gates open like eyelids. Before the Expo in Lisbon, he designed a traffic junction. The subway, bus station and railway meet in one building right in front of the Expo's main entrance. In Valencia, Calatrava's hometown, he built a city of arts and sciences in a dry river valley. Markus Bollen took pictures there with his large format camera.

The result is timeless shots of a structure that, thanks to the light and the natural movement in the flow of lines, is not only majestic but soothing at the same time.