A stone figure, presented as Atlas, of Bendana palace (Pazo Bendaña) located at the Toral square in the historic area of Santiago de Compostela. Atlas keep a Sphere on its shoulders adorned with the sun and stars. The Eugenio Granell Foundation and Museum is housed in Bendana palace by 1995. Eugenio Granell (1912-2001) is a surrealist painter and artist, who was born in A Coruna, and spent his childhood and youth in Santiago de Compostela.

Unique triple helix spiral staircase in the Museum of Galician People (Museo do Pobo Galego) ), Santiago de Compostela.

The unique Wood-Carving Museum in Bulgaria is housed in the old Daskalov’s House in town of Tryavna. It was built by the merchant Hristo Daskalov from 1804 to 1808. The two carved Suns on the ceilings in two of the rooms are the most famous exhibits. They were made by the master Dimitar Oshanetsa and his scholar Ivan Bochukovetsa, during a period of six months in 1808. They were in competition to who one of them would decorate a ceiling with wood-carvings more beautifully. The carvings have geometry symbolizing calm May and hot  July Suns.

 Cup:  x2+y2=16z4

 Apple:  (x2+y2+z2)2= x2+y2   

Lemon:  x2+z2=4y3(1-y)3 , made by Maple.

Plots of surfaces:

x2+y2=4z3(1-z)2   and  x2+y2=64z4(1+z)3,

made by Mathematica, using ParametricPlot3D.

Plots of surfaces:

x2+y2=4z3(1-z)3  (lemon),

 x2+y2=4z5(1-z) (fig)  and  x2+y2=4z2(1-z)5,

made by Mathematica, using ParametricPlot3D.

8 circles with radius r=1.6, CK: {Cos[2πk/n]+r Cos[t], Sin[2πk/n]+r Sin[t]},

{t,0,2 π}, k=1,…, 8, n=8.

8 ellipses with semi axes a=1.6, b=1.2 , {t,0,2 π}, k=1,…, 8, n=8.

E_K:{Cos[2πk/n]+a Cos[2πk/n] Cos[t] +b Sin[2πk/n] Sin[t],

Sin[2πk/n] - a Sin[2πk/n] Cos[t] +b Cos[2πk/n] Sin[t]}.

12 circles with radius r=1.2 in three and four colors

Ck: {Cos[2πk/n]+r Cos[t], Sin[2πk/n]+r Sin[t]}, {t,0,2 π},

k=1,…, 12, n=12.