This 3D model was originally created with Sketchup 8 and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 Former military observation tower next to the Royal Navy ObservatorioAstronómico in San Fernando (Cádiz). 3ªEv work. by Jose Antonio Rojas Ramos and Antonio Rodriguez del Águila in the course of TYC 2nd Bach. Technology. Professor Jesus Gonzalez Riancho Mule. Secondary Education Institute Sancti Petri, San Fernando Cadiz, Spain