The Puerta de Alcalá ("Alcalá Gate") is a Neo-classical monument in Madrid, Spain. It is regarded as the first modern post-roman triumphal arch built in Europe, older than the similar monuments Arc de Triomphe in Paris and Brandenburg Gate in Berlin.
Madrid in the late 18th century still looked like a somewhat drab borough, surrounded by medieval walls. Around the year 1774, king Charles III commissioned Francesco Sabatini to construct a monumental gate in the city wall through which an expanded road to the city of Alcalá was to pass, replacing an older, smaller, gate that stood nearby. It was inaugurated in 1778.