Loutraki sits on the Gulf of Corinth, 81 kilometers west of Athens and 8 kilometers northeast of ancient Corinth, with the Geraneia mountain range rising to the north and east. The town is not technically on the Peloponnese — the Corinth Canal cuts just to the south, making Loutraki's strip of coastline part of the Greek mainland proper. Natural thermal springs and cold mineral springs bubble up through the limestone here, and it was an 1847 announcement in Italy — claiming that the waters had therapeutic properties — that triggered the wave of settlement that created the modern town. Word spread through the Mediterranean; people came. By the late 19th century Loutraki had become the spa destination of choice for Greek and Levantine visitors seeking relief from rheumatic ailments, digestive complaints, and the vague ailments that spa culture has always promised to cure.

In 1928, an earthquake destroyed Loutraki almost completely. The town was rebuilt — and the method of rebuilding carried its own history inside it. The rubble from the fallen houses was used to reclaim land from the sea, creating a large park along the waterfront. New buildings rose on the reclaimed ground, including the five-storey Hotel Palace on G. Lekkas Street, built in 1923 and repaired after the earthquake, its two marble staircases rising under arched openings in a style that blends symmetry and elegance. The spa culture revived with the reconstruction; by mid-century Loutraki was again a byword for rest, treatment, and the specific pleasure of drinking cold, clean mineral water straight from the source. Another strong earthquake struck in 1981, this time with less destructive force than its predecessor, though the tremors were felt as part of the wider Gulf of Corinth earthquake sequence that shook the region that February and March.

Ask for water in almost any taverna or hotel across Greece and the bottle that appears is likely to say Loutraki. The town's natural mineral water has been bottled and distributed nationally for generations, making Loutraki a household name even to Greeks who have never visited. The springs produce a light, slightly mineralized water drawn from the limestone aquifer of the Geraneia range — geology translating, through the accident of carbonate rock and aquifer depth, into something that tastes faintly of the mountains above. It is one of the more quietly satisfying facts about the Greek economy: a spa town's geological luck became a brand recognizable from Alexandroupoli to Heraklion.

Modern Loutraki has three signatures beyond its waters. The Club Hotel Casino Loutraki — one of the largest casinos in Europe — draws thousands of visitors daily, filling the promenade with a different energy from the sedate spa tradition. About 10 kilometers to the northwest, perched on the Geraneia mountain above the town, the Monastery of Saint Patapios offers something entirely different: silence, views across the Isthmus to both the Saronic and Corinthian Gulfs, and a cave church cut into the rock. And a few kilometers further along the peninsula road, the Heraion of Perachora waits at the tip of the headland — the 9th-century-BC sanctuary of Hera, set above its cove with the same water that Loutraki has always overlooked. The town and the sanctuary share a coastline and a geological truth: this corner of the Gulf is defined by what comes up from the ground.

Loutraki has produced its share of notable figures. The actress and politician Anna Synodinou, born here in 1927 and active in Greek theatre and public life until her death in 2016, brought a cosmopolitan sensibility back to a town that has always welcomed outsiders. The actor Pantelis Zervos, born in 1913, came from the same small-town theatrical tradition that Loutraki's resort culture nurtured. Today the town's 12,212 residents — a 2021 census figure — share their streets with summer visitors seeking the promenade, the spas, the casino, or simply the view of the Gulf from a café chair in early evening, when the mountains go purple and the water catches the last of the light. Loutraki has always been better than its description suggests. A spa town sounds ordinary. This one, with its geological improbability and its rebuilt waterfront and its bottle on every Greek table, is anything but.