Read this: The largest plaza in Valencia is the Plaza del Ayuntamiento; it is home to the City Hall (Ayuntamiento) on its western side and the central post office (Edificio de Correos) on its eastern side, a cinema that shows classic movies, and many restaurants and bars. The plaza is triangular in shape, with a large cement lot at the southern end, normally surrounded by flower vendors. It serves as ground zero during the Les Falles when the fireworks of the Mascletà can be heard every afternoon. There is a large fountain at the northern end.
Now answer this question, if there is an answer (If it cannot be answered, return "unanswerable"): What is on the eastern side of Valencia's largest plaza?
the central post office