Saint Sophia Greek Orthodox Cathedral was founded as a church in 1904 to serve the Greek Orthodox residents of the District of Columbia. In 1962, the church was elevated to a cathedral. The building is in the Neo-Byzantine style with a central dome that reaches 24m in height.
The congregation met in temporary quarters for several years, prior to the construction of its own church near 8th and L Streets NW which was dedicated in 1924. This site is currently occupied by the Walter E. Washington Convention Center. Construction on the current edifice at 2815 36th Street NW, near Massachusetts Avenue and a short distance from the Washington National Cathedral, began in 1951. The congregation began worshipping there in 1955 shortly after major construction was completed. Although the building has been in use for over fifty years, the interior decoration is incomplete. Work began on the interior in 1965 and continues to the present.References:
Tyniec Benedictine abbey was founded by King Casimir the Restorer probably around 1044. Casimir decided to rebuild the newly established Kingdom of Poland, after a Pagan rebellion and a disastrous Czech raid of Duke Bretislaus I (1039). The Benedictines, invited to Tyniec by the King, were tasked with restoring order as well as cementing the position of the State and the Church. First Tyniec Abbot was Aaron, who became the Bishop of Kraków. Since there is no conclusive evidence to support the foundation date as 1040, some historians claim that the abbey was founded by Casimir the Restorer’ son, King Boleslaw II the Generous.
In the second half of the 11th century, a complex of Romanesque buildings was completed, consisting of a basilica and the abbey. In the 14th century, it was destroyed in Tatar and Czech raids, and in the 15th century it was rebuilt in Gothic style. Further remodelings took place in the 17th and 18th centuries, first in Baroque, then in Rococo style. The abbey was partly destroyed in the Swedish invasion of Poland, and soon afterwards was rebuilt, with a new library. Further destruction took place during the Bar Confederation, when Polish rebels turned the abbey into their fortress.
In 1816, Austrian authorities liquidated the abbey, and in 1821-1826, it was the seat of the Bishop of Tyniec, Grzegorz Tomasz Ziegler. The monks, however, did not return to the abbey until 1939, and in 1947, remodelling of the neglected complex was initiated. In 1968, the Church of St. Peter and Paul was once again named the seat of the abbot. The church itself consists of a Gothic presbytery and a Baroque main nave. Several altars were created by an 18th-century Italian sculptor Francesco Placidi. The church also has a late Baroque pulpit by Franciszek Jozef Mangoldt.