If you like to know how things are made
The mural in the first room is painted directly on the gallery walls. I've used a technique invented by the Romans. For many of their best inscriptions, a scribe would write directly on the marble with a chisel-edged brush with a red pigment called minium. This writing was carved out with a chisel to preserve it then the carved letters were repainted in red to make them stand out from the white stone. Most modern typefaces have unknowingly copied the forms naturally created by the swiftly moving brush.