Like most islands, Milos isn't all coast and pretty beaches, there are some lovely mountain villages too.
This is the view from Ergina in Tripiti, where we had lunch after Sarakiniko. We first went there for dinner with friends when it was too dark to see anything, and had to come back for lunch for the photos. (Again, lunch is at 16h, if you're wondering why it's empty...)
Unfortunately I don't have any photos of Plaka, since we only went there at night (apart from the wedding ceremony). During the day it's empty, and all the shops are closed, but at night the little maze that is this town comes alive, it's narrow streets crowded with people sitting outside having dinner and drinks, shopping or just talking. Add to it the typical white and blue houses, and bright pink bougainvilleas covering all the footpaths, and you'll have a pretty clear picture of why you should visit. If you need another, Utopia is a bar where you can watch the sunset, and the only place in Europe where I have seen a Vesper on the menu.
The photos below are from the Sand Museum, where you can buy all sorts of decorative items, and even jewellery, made with sand (or decorated with sand), and he'll happily explain to you how he gets all the different colours from the brown thing you see at the beach. Below is how he extracts the black with a simple magnet.
And a wall of sand from all over the world, mostly sent by visitors.