What do you do when you have extra rooftop space like the Grande Hotel Do Porto? You build an extra hotel room in the shape of a pyramid, of course! Designed by COR Arquitectos, this additional room for the hotel is used for exercise equipment.
The Grande Hotel Do Porto is located in Portugal and if you ever have the chance to see this pyramid, do it! What's cool about this design is that the outside of the pyramid looks like it is made out of fish scales. Pretty neat, huh?