  
Atlanta zoo walkway | 
  
Turtle tesselation | 
  
A Washington DC building suggesting pm symmetry | 
  
A brick pattern | 
  
Easton building; what is the symmetry with windows? What if the windows were rectangles? Do the S's change the symmetry? | 
  
Pattern from floor in Fretz House at Lafayette | 
  
Hex pattern from restaurant floor in San Antonio | 
  
Marilyn Monroe's Lips, by Andy Warhol, in a p1 array. Does the near pm symmetry make them more attractive? | 
  
Princeton University brick pattern | 
  
Princeton University brick pattern 2 | 
  
Penn State library ceiling | 
  
Sand ripples | 
  
Slates outside Pardee hall at Lafayette | 
  
University of Scranton tiling |