The Mail & Custom’s House is rare and historically significant building in Eckerö. It was designed by famous Finnish architects C.L. Engel and C. Bassi and completed in 1828. The purpose of the building was to indicate the power of Russian Empire to seafarers coming from Sweden and it was built intentionally too large for the custom and post office need.
The Mail & Custom's House is well preserved. Today it functions as the post museum and there are temporary exhibitions.
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.