Samtavisi is an eleventh-century Georgian Orthodox cathedral 45km from Tbilisi. According to a Georgian tradition, the first monastery on this place was founded by the Assyrian missionary Isidore in 572 and later rebuilt in the 10th century. Neither of these buildings has survived however. The earliest extant structures date to the eleventh century, the main edifice being built in 1030 as revealed by a now lost stone inscription. The cathedral was built by a local bishop and a skilful architect Hilarion who also authored the nearby church of Ashuriani. Heavily damaged by a series of earthquakes, the Cathedral was partially reconstructed in the 15th and 19th centuries. The masterly decorated eastern façade is the only survived original structure.
The Samtavisi Cathedral is a rectangular 4-piered cruciform domed church. It illustrates a Georgian interpretation of the cross-in-square form which set an example for many churches built in the heyday of medieval Georgia. The exterior is distinguished by the liberal use of ornamental blind arcading. The apses do not project, but their internal position is marked by deep recesses in the wall. In contrast to earlier Georgian churches, the drum of the dome is taller surmounted by a conical roof. Artistically, the most rounded portion of the church is its five-arched eastern façade, dominated by the two niches and enlivened by a bold ornate cross motif.
Beyond the main church, the Samtavisi complex includes a badly damaged two-storied bishop’s residence, a small church (5.8х3.2m), and a three-storied belltower (5.7х7.3m) attached to the 3-5m high fence made of stone and brick. All these structures date to the 17th-18th centuries.References:
Ängsö Castle was first named as "Engsev" in a royal charter by king Canute I of Sweden (r. 1167-1196), in which he stated that he had inherited the property after his father Eric IX of Sweden. Until 1272, it was owned by the Riseberga Abbey, and then taken over by Gregers Birgersson.
From 1475 until 1710, it was owned by the Sparre family. The current castle was built as a fortress by riksråd Bengt Fadersson Sparre in the 1480s. In 1522, Ängsö Castle was taken after a siege by king Gustav Vasa, since its owner, Fadersson's son Knut Bengtsson, sided with Christian II of Denmark. However, in 1538 it was given by the king to Bengtsson's daughter Hillevi Knutsdotter, who was married to Arvid Trolle.
In 1710, the castle was taken over by Carl Piper and Christina Piper. Ängsö Castle was owned by the Piper family from 1710 until 1971, and is now owned by the Westmanna foundation. The castle building itself was made into a museum in 1959 and was made a listed building in 1965. It is currently opened to visitors during the summers.
The castle is a cubical building in four stores made by stone and bricks. The lower parts is preserved from the middle ages. It was redecorated and expanded in the 1630s. The 4th storey as well as the roof is from the expansion of Carl Hårleman from 1740-41. It gained its current appearance in the 1740s.