They were painted prior to the frescoes in the apse. Some have interiors covered with frescoes and facades. Medieval monasteries contain a number of artistically important frescoes. These palaces have yielded a wealth of artifacts and fragmentary frescoes. In general Mycenaean palaces have yielded a wealth of artifacts and fragmentary frescoes. Its late Baroque frescoes were executed in 1752. The naves are covered with canyon vaults decorated with frescoes by Luca Giordano. The earliest Christian portrayal of Isaac is found in the Roman catacomb frescoes. Its central arch leads to a dome decorated with frescoes of biblical scenes featuring archangels. This cycle of tempera frescoes are his masterworks. Some of the original medieval frescoes survive. Some of its medieval frescoes are still visible. Most of its walls, ceilings, and particularly its frescoes survived largely intact. On the wall are frescoes by Domenico Ghirlandaio, painted in 1482. The suites are famous for their Mannerist frescoes.