Established in 1925, Pontificio Istituto di Archeologia Cristiana (Pontifical Institute of Christian Archaeology) is a non-profit private higher-education institution located in the urban setting of the metropolis of Roma (population range of 1,000,000-5,000,000 inhabitants). Officially recognized by the Congregation for Catholic Education of the Vatican City State, Pontificio Istituto di Archeologia Cristiana (PIAC) is a very small coeducational Vatican higher education institution formally affiliated with the Christian-Catholic religion. Pontificio Istituto di Archeologia Cristiana (PIAC) offers courses and programs leading to officially recognized higher education degrees such as master degrees, doctorate degrees in several areas of study. This 97 years old Vatican higher-education institution has a selective admission policy based on entrance examinations. International applicants are eligible to apply for enrollment. PIAC also provides several academic and non-academic facilities and services to students including a library, as well as administrative services.