The Puerta de Alcalá is a Neo-classical monument in the Plaza de la Independencia in Madrid. It is regarded as the first modern post-Roman triumphal archbuilt in Europe, older than the similar monuments Arc de Triomphe in Paris and Brandenburg Gate in Berlin.
Puerta de Alcalá was a gate of the former city walls built by Philip IV. It stands near the city center and several meters away from the main entrance to the Parque del Buen Retiro. The square is bisected by Alcalá Street, although the street does not cross through the monument, and it is the origin of the Alfonso XII, Serrano and Olózaga streets. Its name originates from the old path from Madrid to the nearby town of Alcalá de Henares.
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.
References:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.