There is normally a high pressure turbine and set of low pressure turbines.
Steam goes from the Steam Generator to the HP turbine, and from the HP turbine to the LP turbines. The condenser sits under the low pressure turbines where low pressure steam (or water vapor) is condensed back to liquid to be pumped back to the steam generator.
The turbine shaft is coupled to a generator, and the generator is coupled to the grid via a switch yard where transformers step up the voltage for transmission.
The condenser exchanges heat with a cooling tower, river or lake, i.e., the environment.
The turbines, condenser and generator are located in an auxiliary building which is attached to the containment building. The reactor vessel and steam generators are in the containment building.