By Fra Angelico (Italy, 1387-1455).

Quintessence of early renaissance religious art. I like the composition and the contrast between the organic background and the geometric shape (with weird perspective) of the building. Pure and enchanting.

(Tempera on panel, Museo del Prado, Madrid, Spain)

note:
aureole / halo history: Halos in Art: Horus to Jesus Christ to the X-Men