Complex sentence: Solon designed the blue-and-gold Venetian glass tile mosaics used in the indoor Roman Pool at Hearst Castle and he also designed and painted the murals in the Gothic Study of Casa Grande Library.
Split into simpler sentences: Solon designed the blue-and-gold Venetian glass tile mosaics used in the indoor Roman Pool at Hearst Castle. Solon also designed and painted the murals in the Gothic Study of Casa Grande Library.