Vartiovuori observatory is the former observatory of the Royal Academy of Turku. Building was completed 1819 and it was designed by German architect Carl Ludvig Engel. By its style, the neoclassical observatory is typical work of Engel and it has obvious similarities to Helsinki University Observatory and Pulkovo Observatory (in St. Petersburg, Russia) designed also by him. Building is located on top of the Vartiovuori hill, close to the cathedral and Aura river and it's well visible from many places in city center.
The Academy moved to Helsinki after the Fire and got a new observatory there few years later. Instruments were moved to Helsinki and finally Vartiovuori Observatory became defunct 1834. At 1836 Åbo Navigationsskola (Maritime School) moved into empty observatory building and stayed there until 1967. Between 1986 and 1998 building was a maritime museum and during the repair of the Turku Art Museum 1999–2005, the changing exhibitions were placed in observatory. Currently and also in the picture, a flag of the foundation Stiftelsen för Åbo Akademi flies over the building.
The observatory and several wooden houses (current Luostarinmäki Handicrafts Museum) on the hill were saved from the Great Fire of Turku 1827.References:
The city walls of Avila were built in the 11th century to protect the citizens from the Moors. They have been well maintained throughout the centuries and are now a major tourist attraction as well as a UNESCO World Heritage Site. Visitors can walk around about half of the length of the walls.
The layout of the city is an even quadrilateral with a perimeter of 2,516 m. Its walls, which consist in part of stones already used in earlier constructions, have an average thickness of 3 m. Access to the city is afforded by nine gates of different periods; twin 20 m high towers, linked by a semi-circular arch, flank the oldest ones, Puerta de San Vicente and Puerta del Alcázar.