The Cathedral of St. Matthew the Apostle in Washington D.C., most commonly known as St. Matthew's Cathedral, is the seat of the Roman Catholic Archdiocese of Washington.
St. Matthew's is dedicated to the Apostle Matthew, who among other things is patron saint of civil servants, having himself been a tax collector. It was established in 1840. Originally located at 15th and H Streets, construction of the current church began in 1893, with the first Mass being celebrated June 2, 1895. Construction continued until 1913 when the church was dedicated. In 1939, it became the cathedral for the newly established Archdiocese of Washington.
The structure is constructed of red brick with sandstone and terra cotta trim in the Romanesque Revival style with Byzantine elements. Designed by architect C. Grant La Farge, it is in the shape of a Latin cross measuring 47 m × 41 m and seats about 1,200 persons. The interior is richly decorated in marble and semiprecious stones, notably a 11 m mosaic of Matthew behind the main altar by Edwin Blashfield. The cathedral is capped by an octagonal dome that extends above the nave and is capped by a cupola and crucifix that brings the total height 61 m.
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.