Coats of arms with stars on buildings in Santiago de Compostela, Spain.

Roseton. Maestro Mateo, 1200. Museum of the Cathedral of Santiago de Compostela.

Great Stellated Ikosahedron, Great Stellated Dodecahedron, Stellated Dodecahedrons. Made by Mathemaica package Graphics’ Polyhedra.

Pentagon star (Pentagram) from the lobby of Gulbenkian Foundation, Lisbon, Portugal. Pentagrams were used as a religious symbols by the Babylonians and by the Pythagoreans in ancient Greece.

The Calouste Gulbenkian Foundation, whose aims are in arts, charity, education and science, is established in Portugal, 1956. The founder, Calouste Gulbenkian, was Armenian born near Istanbul, who worked in Britain and became British citizen, lived in France and settled in Portugal.

Natural Pentagram, Starfish.

Stellated Octahedron, Stellated Dodecahedron, Stellated Hexahedrons. Made by Mathemaica package Graphics’ Polyhedra.

Spheres in the Gulbenkian Foundation, Lisbon.

Icosahedrons, Hexahedrons and Dodecahedrons made by Graphics3D, Table in Mathematica.

Truncated Octahedron, Dodecahedron, Hexahedrons and Ikosahedron made by Mathematica.

Ellipses in a garden of Lisbon

View on the platforms of Gare do Oriente (Lisbon Orient Station). It is one of the main transport hubs in Lisbon, designed by the Spanish architect Santaiago Calatrava and built by Nesco. It was finished in 1998 for Expo’98.

Gare do Oriente. An other view.

View on Vasco da Gama Shopping Center.

Saddle structure in Jardim da Estrela, Lisbon.

The Jardim da Estrela is a delightful park in front of Basilica da Estrela in Lisbon. It was created in the mid XIX century. The garden has several statues, lakes, populations of various birds and plant species.

Stars and orbits in the lobby of Gulbenkian Foundation, Lisbon.

Polygon stars. {Cos[4t], Sin[4t]}, (t. 0, 6π, 6π/7}, made by Mathematica.