San Crisogono in Trastevere is dedicated to the martyr Saint Chrysogonus. It was probably built in the 4th century under Pope Silvester I (314–335), rebuilt in the 12th century by John of Crema, and again by Giovanni Battista Soria, funded by Scipione Borghese, in the early 17th century.
The bell tower dates from the 12th century rebuilding. The interior of the church was rebuilt in the 1620s on the site of a 12th-century church. The 22 granite columns in the nave are reused antique columns. The floor is cosmatesque mosaic, but most of it is hidden by the pews. The confessio in the sanctuary area is from the 8th century. The high altar is from 1127, with a baldachino from (1627 or 1641) by G.B Soria.
Remains from the first church, possibly from the reign of Constantine I, and earlier Roman houses can be seen in the lower parts, reached by a staircase in the sacristy. The ruins are confusing, but you can easily find the apse of the old church and you can see the remains of the martyr's shrine in middle of the apse wall. The church had an uncommon form; rather than the normal basilical plan with a central nave and two aisles on the sides, it had a single nave.
The paintings are from the 8th to the 11th century, and include Pope Sylvester Capturing the Dragon, St Pantaleon Healing the Blind Man, St Benedict Healing the Leper and The Rescue of St Placid.
Several sarcophagi have been preserved here, some beautifully decorated.References:
Narikala is an ancient fortress overlooking Tbilisi, the capital of Georgia, and the Kura River. The fortress consists of two walled sections on a steep hill between the sulphur baths and the botanical gardens of Tbilisi. On the lower court there is the recently restored St Nicholas church. Newly built in 1996–1997, it replaces the original 13th-century church that was destroyed in a fire. The new church is of 'prescribed cross' type, having doors on three sides. The internal part of the church is decorated with the frescos showing scenes both from the Bible and history of Georgia.
The fortress was established in the 4th century and it was a Persian citadel. It was considerably expanded by the Umayyads in the 7th century and later, by king David the Builder (1089–1125). Most of extant fortifications date from the 16th and 17th centuries. In 1827, parts of the fortress were damaged by an earthquake and demolished.