The words "entry", "access" and "entrance" have to do with physical structures. People can speak about having "barrier-free access" for the handicapped. They could say the "handicapped entry" or the handicapped entrance" is at the front of the building. These words would be used to describe the actual doorway or stairway in the building. The word "admission" is used when there is a cost. The words "free admission" are used when there is no cost for getting inside. Hope this helps.

Hi Robert All four of them are correct, but I think 'free entrance' and 'free admission' are most likely used (that's what I see a lot in museums). Note: it's 'free access' instead of 'free acces'. Regards Karen