The Church of the Holy Apostles, also known as the Church of the Holy Apostles Solakis or Agioi apostoloi is located in the Ancient Agora in Athens. This Byzantine Church was built in the 10th century and is one of the oldest Christian temples of Athens.

Perhaps the name "Solaris" is derived from the names of the benefactors who helped to restore the Church, or from Solace" was the name of the densely populated area around the Church in the 19th century. The Church of the Holy Apostles is of particular importance as it is the only monument in the Athenian Agora, in addition to the temple of Hephaestus, which is fully preserved in its original form to the present day.

It's the first major Church of the Byzantine period in Athens, marking the beginning of construction of the so-called temples of Athens type (cross-domed Church with four colon). The Church of the Holy Apostles was built on the ruins of an ancient Roman temple from the 2nd century, dedicated to the nymphs (nymphaion), although its Eastern side stands on the Foundation of an ordinary house, which is likely demolished specifically for the construction of the temple. The location for the Church was not chosen randomly. This place is considered as key in the classical era and the Byzantine. The Church is located on the West side Panathinaikos path and near the wall, which was important in defending the city from invasions.

The original plan of the Church is a cruciform building with four columns that support the dome. Four ends of the cross" are semicircular niches, between which are located a small sink. The Church has several chapels, one of which was later expanded to accommodate sarcophagus here. Most likely, the tomb was intended for the patron of this Church, which according to Byzantine tradition had the right to be buried in the Church, however, as his relatives. The altar and the Church floor is made of marble. Tiles on the external walls adorned with decorative Kufic patterns. Today the Church interior is decorated and also post-Byzantine frescoes, which were brought from the demolished Church of St. Spyridon, who was sitting nearby.

In the mid-20th century was a large-scale restoration of the building, and today the Church of the Holy Apostles appears to us in its original form.