As of 2004 the Greek inscribed list of 16 mainly “classical” sites also contains 7 “non classical”, mainly Byzantine. Mystras is one of these, but unusual, in that it is now an uninhabited and largely ruined city. In the 14th and 15th centuries it had strong cultural credentials (Michelin talks of “The Florence of the Orient”!). These included philosophy as well as art and architecture. It surrendered to the Turks in 1460 but was not finally abandoned until it was pillaged during the Greek War of Independence around 1825
Today, its most obvious claim to fame rests on the (more than 12??) Byzantine “churches”, including a cathedral and several monasteries. Many have been restored and contain fine murals. These are of course “worth a visit” even for a non “Byzantium specialist” but it was the general atmosphere of calm and rural solitude which I remember. The large site provides plenty of opportunity to wonder the cobbled streets and courtyards at leisure soaking up the scent of wild flowers and looking out over the vistas of Greek countryside. Also, as I remember it, even finding “wild” tortoises (at least they were when we picked them up)! Avoid the heat of the day as it is built on the side of a mountain (photo) and there is a lot of climbing.