When adding or replacing a shower in an existing finished bathroom, one of the first things to consider will be the dimensions of the shower and space. Putting a shower in new construction is pretty simple, because it is usually done before all the walls are finished, and there is a lot of open space for maneuvering.
Whatever your bathroom size or situation, there is a new shower out there that will work into your specific situation and space. Walk in showers are very popular, but there are also smaller shower stalls, and corner showers. If you have space limitations you may find that a shower-tub combination works best. There are also showers that simulate the look and feel of tile in new materials.