I am trying to make a house walkthrough and have been looking online but cant find anything that i can work with...

basicly i want to be able to have the user go through my house in a 3d enviroment and had collision detection and what not and be able to zoom in on certain places based off of pictures takin from a camera with 360degree angle ...

Able to explore the whole building...

Any help would be appreciated and I am almost a novice at this kind of stuff