Landsort lighthouse tower was built in 1689, with an upper conical iron section added in 1870. Open fires have been lit here since a long time ago. The first 'real' lighthouse was lit in 1651 and, until the now-standing tower was built, a couple of different buildings were used as the lighthouse. The 1689 tower was constructed to carry an open fire which ran on coal. In 1840, a colza oil lamp was installed. The flame ran on paraffin from 1887, and in 1938 it was electrified. Today the Swedish Maritime Administration owns and runs the lighthouse.
References:The Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.