One of my favorite buildings in Athens and part of the November 24-25 (23-26/27) Architectural Workshop that I am currently organizing (details & sign up: http://goo.gl/wd4Gh ).
Simple but very well composed volumes, the work of a famous architect, this building needs some time to be understood in all its beauty. There are quite a few details and angles that one cannot see at a first glance. You have to walk around, be careful and get close to manage to discover its soul, the one element that will speak to you and be the quintessence of the whole structure. The interior is beautiful also (I'm trying to get a permit to shoot inside too) and the view from the underground is so unexpected, as there are all kinds of slim openings in the ceiling's concrete slab, in different shapes and sizes, all looking towards the sky. This is also the floor of the main “Plateia”, the central square of the building, where this photo has been taken. You cannot see that here, that's a surprise you'll have to come here to discover :) The view is also beautiful by night, when the underground is lit and the Plateia's floor with all these openings looks like a work of art.