1860s "Trick the Eye" Murals Open to the Public

This is a rare space that is open to the public only several times a year....Come to the Open House during the Street Fair to see the walls that have survived over 160 years of history. The pigments were mixed by hand and the complex perspective was mapped out by candle light.  Will your eye be able to see where the flat wall "ends" and the illusion begins?

Which items are painted on the flat wall?   

a) the curtains     b) the chair     c) the columns     d) the pedestals

HINT: two of the above choices are part of the 1860 "Trick the Eye" mural (pictured above). Come to the open house to see this wall that has survived over 160 years of history.