Silver Star

Silver Star (シルバースター Shirubā Sutā 聖兄弟の記号 lit. Sign of the Holy Brotherhood) is a Dark Guild, whose intention is to uncover the misteries of magic, through unnorthodox methods, namely by discovering the One Magic.

Location
The guild's base's location is unknown, however, the building where they reside was revealed.

Building
The guild members of the Silver Star coexist in a big castle in the middle of what is possibly an ocean, in an island. The entire building covers the area of the island, and noone but the members can access the building, as they would have to climb the tall walls that conceal it.

The castle takes the appearance of a typical palace, with cylindrical towers and peaked roofs, several windows covering the many walls of the building and intricate details throughout its entirety. Its inside is very complex, full of rich and expensive objects, to ensure the luxury in the life of the members.

Trivia

 * "Sigillum sanctum fraternitatis" is Latin for "Sign of the Holy Brotherhood" and "A∴A∴" stand for "ASTRVM ARGETNEVM" or "Silver Star". As for the symbology, it is a seven-pointed star, each point corresponding to a letter in the word "BABYLON", probably as the Mother of Mysteries, and a mandorla (vesica piscis), some crosses and a lot of "7"'s in the center.