These are 3 real life buildings, found in Barcelona. The one in the middle and most famous is Casa Batllo by Antoni Gaudi. Left of it is also architectural jewel of Barcelona, Casa Amatller. The third is just the corner building with no specific value. The 3 buildings were modeled for the purpose of Google Earth 3d Buildings Layer which required less geometry. Having in mind the buildings complexity and facade details, this is relatively low geometry. Suitable for gaming/virtual reality and so.
The model si created with Sketchup and exported to other formats!