Antoni Gaudí designed many whimsical building in Barcelona, Spain
1= form and light
2=depth
refer to these websites for more info on both illusions
1- thevirtualinstructor.com/hatchingcrosshatching.html
2- www.udel.edu/artfoundations/beg_paintingtechniques.html
The answer(s) would be B)horizon C)value and D) focus
