The two different colors for the floor is because I didn't have enough pieces. Many choices where forced because of the lack of pieces! It’s a modular building, you can see on the side where you would hook up other buildings.
Ground floor (or first floor for Americans)
On the right the entrance and a few paintings, in the middle a double staircase to the upper floor and on the left fossils (kids and teacher from a school trip).
First floor (or second floor for Americans)
Upstairs ancient weapons and armors, and some animals.