RENFE - Spain
The huge border station of Canfranc in the Pyrenees mountains had a French (standard gauge) and a Spanish (broad gauge) side. Since a derailment in the 1970s French trains no longer reach Canfranc, and Spanish trains only use a side platform.
The entire main building in 1 picture.
Canfranc, 14-05-2015

Digital photo by Marco van Uden