The Basilica of the National Shrine of the Immaculate Conception is the largest Catholic church in the United States and North America, one of the ten largest churches in the world, and the tallest habitable building in Washington, D.C. Construction of this church, notable for its Neo-Byzantine architecture, began in 1920 under Philadelphia contractor John McShain. It opened unfinished in 1959. An estimated one million pilgrims visit the basilica each year.
The basilica is designated both as the national and patronal Catholic Church of the United States, honoring the Virgin Mary, under the title Immaculate Conception, by which Pope Pius XI donated a mosaic of the same image in 1923.
The basilica houses 70 chapels honoring Mary and reflecting the origins of the Catholic immigrants and religious orders whose generosity erected them. Its Greek-styled interior is crowned with numerous domes decorated in mosaics, similar to the Basilica of St. Mark in Venice, Italy, but much larger. The mosaics feature American renditions of traditional Catholic images. Artist Jan Henryk De Rosen, who presided over the shrine's iconography committee was also responsible for much of its decor, including composing the large mosaic over the northern apse.
The exterior of the basilica is 152m long, 73m wide, and 72 m tall to the top of the cross on the dome. The shrine was built in the style of medieval churches, relying on masonry walls and columns in place of structural steel and reinforced concrete. It was designed to hold 10,000 worshipers.
In all, 70 chapels and sacred images flank the sides of the upper church and crypt. It contains many works of art. There are arches outlined with iridescent Pewabic Pottery tile, large ceramic medallions set in the ceiling, and fourteen Stations of the Cross for the crypt.
References:Towering 52 meters above the sea, Bengtskär lighthouse is the tallest one in Scandinavia. The building started in in 1905 after the shipwreck of S/S Helsingfors and was completed in 1906. The lighthouse was designed by architect Florentin Granholm. On December a special petrol lantern, designed and built in Paris, was brought to Bengtskär and installed atop the tower.
German fleet bombarded Bengstkär in the First World War in 1914. Since the Gulf of Finland was heavily mined, it was not until 1919 that the surrounding seas were declared safe for shipping, that the light was lit again.
After the war the military value of Bengtskär increased as part of the defence system of independent Finland. In Second World War (1941) Soviet Union made a suprise attack to island. After a bloody battle, the small Finnish garrison emerged victorious. Intermittent repairs to the facility continued during the post-war period.