Gustavianum is the former main building of Uppsala University, built 1622–1625 and named after King Gustavus Adolphus. Under the cupola is the theatrum anatomicum, the second oldest in the world added to the building in the mid 17th century by Olaus Rudbeck, professor of medicine and amateur architect, among other things.
Although still used for lectures and conferences, most of Gustavianum functions as a museum, including exhibitions of objects from the university collections of Classical, Egyptian and Nordic antiquities, as well as an exhibition on the history of science and the history of Uppsala University. The Augsburg art cabinet, the best preserved of the Kunstschränke made by Philipp Hainhofer, which was given to Gustavus Adolphus in 1632 by the City of Augsburg, is on display in the Gustavianum.
The Museum has an excellent science collection of very old telescopes of Celsius and other astronomers, the oldest achromatic telescope, a book with Copernicus notes on solar eclipses, an important Lineus exhibition and currently an exhibition of the oldest known astronomical instrument and computer, the Antikythera Mechanism.
References:Château de Niort is a medieval castle in the French town of Niort. It consists of two square towers, linked by a 15th-century building and dominates the Sèvre Niortaise valley.
The two donjons are the only remaining part of the castle. The castle was started by Henry II Plantagenet in the 12th century and completed by Richard the Lionheart. It was defended by a rectangular curtain wall and was damaged during the Wars of Religion. In the 18th century, the castle served as a prison.
The present keeps were the central point of a massive fortress. The southern keep is 28m tall, reinforced with turrets. The northern tower is slightly shorter at 23m. Both are flanked with circular turrets at the corners as well as semicircular buttresses. Each of the towers has a spiral staircase serving the upper floors. The Romanesque architecture is of a high quality with the dressed stones closely jointed.