Answer:

mural

AnswerCrossword Clue
MURALUnframed artwork
MURALCertain street art
MURALSistine Chapel feature
MURALDiego Rivera's specialty
MURALWall painting
MURALCertain work of subway art
MURALWall art
MURALDiego Rivera work
MURALWork by Chagall
MURALHard-to-move painting
MURALBig picture
MURALMany a commissioned artwork
MURALPiece of cave art
MURALGiotto work
MURALBit of street art
MURALPiece of street art
MURALSubway artwork
MURALMichaelangelo work