On February 19th 2015, motivated by the centennial of General Relativity celebrated in 2015 and the considerable growth of the scientific community in Portugal studying relativistic gravity, the Portuguese Society of Relativity and Gravitation (SPRG) was formally installed. The photo shows the founding members (from left to right) C. Herdeiro, V. Cardoso, J. Natário and J. Lemos present during the installment of the society at a notary in Lisbon.