The prefecture of Korinthia or Corinthia is the gateway to the Peloponnese from the mainland, characterized by the famous Corinth Canal or Isthmus of Corinth. More importantly, it is a nature lover's paradise with lakes, springs, uninhabited islands and rolling hills – almost like a little country in itself. The town of Trikala in Korinthia (not to be confused with Trikala in Thessalia) is quite green and visitor friendly, even if eco-tourists can seek out even more remote locations such as Nemea, Goura, Sofiko, Feneos and some of the mountainous terrain. Mount Ziria (or Killini) has a modest ski resort and offers activities such as snow-shoeing in winter, while the village of Kastania at over 900 meters is also an interesting destination during both summer and winter. Noteworthy too is the Ziria Mountaineers' hostel tucked away among the fir-tree slopes.
Ziria is a paradise full of robust fauna and flora, with many endemic plant species and rare animal species that make it particularly interesting for the nature-minded. The mountain, after all, is the second highest in the Peloponnese after Taygetus. About 113 plant types of the 1000 found on Ziria are endemic to the region. Its numerous hiking paths will let reveal the very rich biodiversity of the Mediterranean mountainside.
Cycling, hiking and multi-faceted historical ruins will render this prefecture interesting to visitors, so will the two gulfs it straddles (Gulf of Corinth and Saronic Gulf), both ideal for swimming. There are also hot springs such as in Loutraki, which falls on the mainland side of Korinthia, as well as in other areas of the prefecture.
With respect to archaeology, Acrocorinth (or Upper Corinth) is home to a monolithic rock rising against a well preserved ancient acropolis, as well as the well-preserved Pirene fountain of antiquity, said to the preferred fountain of Pegasus. The prefecture is also home to the Heraion near Perachora, a sanctuary dedicated to Hera that's worth seeing.
The mountainous part of the prefecture is ideal for eco-tourism particularly around Stymphalia lake and nearby springs. Doxa lake – an artificially created body of water – looks as natural as ever, surrounded by pine forests and hiking paths.
In another part of the prefecture you can find the road that takes to Hiliomodi, Lenia and Agionari, the latter with a medieval castle and a church that has amazing frescoes.
Lastly, there are eco-friendly accommodation choices such as Daphne's Club and the Ermis Shelter that are very tuned to the environment, eco-tourism and related activities.