Religious tourism flourishes in Loutraki and the Geraneia Mountains are often referred to as the "Agio Oros" - "Holy Mountain" of Southern Greece, due to the many monasteries located in the Geraneia Mountains.

In the sanctified atmosphere of Loutraki and the wider area visitors experience a religious and spiritual retreat. Ancient temples like the Heraion temple in Heraion Lagoon and the Apollo temple in Ancient Corinth. The monasteries of Osios Patapios, Profitis Ilias and Agios Gerasimos lay on the Gerania Mountains slopes offering breathtaking views to the Corinthian Gulf.  

The Church of Our Lady of Prathi, also on the Gerania Mountains, is one of the oldest churches in Peloponnesus, surrounded by pine trees. The churches of Panagia Giatrissa, Agios Ioannis, Agios Fanourios and the Byzantine church of St. Andreas are all located in the city of Loutraki. 

The church of Agioi Theodoroi is a post byzantine from which the name of the city derived.  Many other churches are worth visiting in the area including, the Agia Paraskevi church on Pissia village, Taxiarches Church on Perachora, Agios Georgios on Heraion sanctuary and Agios Nikolaos on the Heraion Lagoon.

Organized tours to all monasteries and churches are part of the itinerary of many of the groups residing in Loutraki hotels all year round. During Easter, groups from all over Europe enjoy an early summer vacation combined with the ceremonial customs of Easter in a sanctified atmosphere.

Last but not least, every year, on the 8th of September, Loutraki celebrates the miraculous icon of our Holy Lady "Giatrissa", the healer, with a magnificent fair that lasts 3 days. Faithfull Orthodox Christians from all over Greece visit Loutraki during the fair to pay respect on the miraculous icon and celebrate Her grace.