space station design and secret

we have now decided to go with a space station that is a cross between my initial idea and the spheres idea. there will be a donut shaped tube around a big sphere, this sphere will have a secret chamber above it that can only be accessed by solving a puzzle.
this puzzle would be a word, and the letters for this word will be scattered throughout the spheres coming off of the donut.

space station design

well i havnt been to class in 3 weeks because i have had tonsilitis, so today is the first class ive been to in about a month. today we are still deciding on what this space station is going to look like. i thought it should be a hollow donut shape like in these pictures below....



But we have decided to go with a shape that consists of spheres that are joined by tubes. i like this idea and it should be easy to make. each dome will have a different shop or place, ad there will also be living quarter domes for peoples own personal space.