Hi Elena and thanks for your nice comments. In fact, Saint Gabriel Tower, ita twin sister, Saint Rafael were designed to look like sails; between then there is a mall (Centro VAsco da Gama) that looks like a ship with its decks and so on; water running on the ceiling, almost gives you the feeling to navigate :)
Here's a link to some pictures of it if you kike to see:

http://commons.wikimedia.org/wiki/Category:Centro_Comercial_Vasco_da_Gama

Best regards. Paulo