View of the Fortress of Guaita, Mount Titano, Repubblica di San Marino. With a 61 km2 land area and a population of 32.000 it is the 5th smallest state in the world (and the smallest member of the UE), and one of the oldest oldest surviving sovereign state and constitutional republics in the world.
It was founded by Saint Marinus that left the Roman island of Arba (present-day Croatia) with his lifelong friend Leo, and went to the nearby city of Rimini (seen in the far background) as a stonemason. After the Diocletianic Persecution following his Christian sermons, he escaped to the nearby Monte Titano, where he built a small church and thus founded what is now the city and state of San Marino.
The official year of the founding is 301, and in 1631 its independence was recognized by the Papacy. The small independent state survived the Napoleons Wars in 1797 becouse the regent was friend of Napoleon, and even Giuseppe Garibaldi accepted the wish of San Marino not to be incorporated into the new Italian state. During WWI and WWII it also had a neutrality state, surviving both wars.
Not much to say about about the photo itself, it is one of the "postcards" of the country that have an economy based on industries that include banking, electronics, and ceramics, beside stamps and imports products that are sold by the countrie (with a little help of the lower VAT). It was taken from the adjacent path that lead to another tower that make part of the fortification complex on the top of Mount Titano.