The north wall of the north transept, depicting an altar dedicated to the Conversion of St. Paul, made of malachite and lapis lazuli and presented by Nicholas I of Russia (by Vincenzo Camuccini); [Rebuilt after a fire in 1823.] In addition to the standard basilicas, several major buildings were erected or decorated in Rome in the 5th century that exhibit a classicizing style and have thus been identified as part of a renaissance of Classical Roman architecture launched by Pope Sixtus III (reigned 432-440): S Maria Maggiore, the remodelled Lateran baptistery, S Paolo fuori le mura as decorated under Pope Leo I (reigned 440-461), the oratory of Santa Croce (destroyed 1588) near the Lateran and S Stefano Rotondo. The cloister dates from ca. 12...