Hagia Triada Cathedral, Piraeus

Interior of the church.

Construction of the original church began in 1839, just a few years after Greece had gained independence from the Ottoman Empire, with its mural decoration finished in 1844, five years later.[1][2] It was completed by 1845. That first church was completely demolished one hundred years later, on January 11 1944, during the bombing of the city of Piraeus by the Allies, resulting in the death of several people who had taken refuge there for protection.[1][2] In the summer of the same year, a makeshift church was built at the centre of the ruins, to serve the parishioners; this provisional church stood there for twelve years.[1][2]

In 1950, the Pampiraic Association for the Restoration of the Holy Metropolitan Church of the Holy Trinity of Piraeus was founded with Miltiadis Pouris serving as its first president. The purpose of the association was the restoration of Hagia Trias in Piraeus, its completion and maintenance. After several discussions and counter-complaints, it was decreed with the intervention of the Archbishop of Athens, Spyridon and the Minister of Public Works, Georgios Rallis, to build a new building, one larger than the previous one and at the exact same location as it.[2]

Works for the new church of Hagia Trias of Piraeus began on a Sunday, June 17, 1956, in the presence of the Archbishop of Athens Dorotheos, the Greek ministers of Education P. Leventis and Social Welfare Lina Tsaldari and the Deputy Minister of Finance D. Aliprantis, the local authorities and other officials.[2]

During the excavations, various ancient vases, gold coins, mosaics, inscriptions and other objects were found, which led to the Greek Archaeological Service deciding to put a stop to the excavations and the new church's constriction.[2] At the same time, the municipality of Piraeus reclaimed the plot.[2] Following the persistent actions of both Archbishop Dorotheos and Miltiadis Pouris, both the municipality and the Greek Archaeological Service dropped their claims and the construction of the new church continued, keeping intact the parts of the ancient buildings, which visitors today can visit and admire in the chapel of Saints Cyril and Methodius.[2]

The inauguration of the new church took place on May 17, 1964, while its construction was finally completed in 1979, based on the blueprints of Georgios Nomikos.[1][2] The works for the church's iconography, undertaken by Stephanos Almaliotos and his student Anargyros Liakos, continued.[1][2]