Where is the STX Group headquarters?

Could you please enlighten me on the whereabouts of the headquarters of the STX Group? I've been searching for this information but haven't been able to pinpoint its exact location. Could you guide me to the city or region where it's situated? I'm particularly interested in understanding the geographical context of this corporate giant. Additionally, if you have any insights on the architectural features or notable landmarks nearby, that would be icing on the cake. Thank you for your assistance in this matter.