Geostroy completed the reconstruction and rehabilitation of the American College in Sofia, which started in September 2016. The event was celebrated with an official ceremony in the college campus on 18 May 2018 and was attended by the Mayor of Sofia Mrs Yordanka Fandakova, the US Ambassador to Bulgaria H.E. Eric Rubin, Deputy Minister of Education and Science Mrs Tanya Mihaylova, President of the American College of Sofia Dr. Richard T. Ewing Jr, President of America for Bulgaria Foundation Mrs Nancy Schiller, as well as other officials, representatives of the contractor and ACS students.

Geostroy carried out the construction and repair works without interrupting the college educational processes. The complete old-fashioned exterior of the building has been preserved complemented by contemporary elements. The glass facade overlooking the fountain lends an additional touch of modern elegance.