It is worth taking a long walk in the pine-covered Bisti Forest, on the edge of the peninsula. From the top of Pronos hill the view to the sea is magical. On your walk you will find the ruins of ancient temples built in honor of Athena and Poseidon, dating back to the 6th century BC. The ruins are remnants of the notorious Cyclopean cobblestone walls, which formed the perimeter of the ancient acropolis.
Ermioni feels like an island as it is washed by the sea on both sides - Mandrakia in the south and the Port in the north. Mandrakia is the most picturesque area of the town, with active nightlife and a favorite meeting point for young people.
Visit the Monastery of Agioi Anargyroi dating back to the 11th century. Admire the magnificent frescoes of the 17th century Cretan school and the hagiographies of the Byzantine period. The monastery has thermal springs and an excellent library.
It is worth taking a night stroll on the illuminated hill of Krothi, with the picturesque chapel of Agios Gerasimos at the top and the magnificent view of Ermioni peninsula below.
Ideal for exploration, Katafyki Gorge has a river, lush vegetation, and many caves while it connects the city with the picturesque village of Fourni. It is ideal for walking and climbing, while it has been characterized by the Greek state as an "area of special natural beauty and wildlife refuge".
The Historical and Folklore Museum is a reference point in Ermioni. It is housed in a neoclassical, 18th-century, stone-built house and exhibits paintings from the Greek revolution period, weapons of that time, tools used by sponge divers and farmers, as well as traditional costumes from all phases of the local weaving art.
The Toy Museum is an interest visit, with exhibits that focus on children from the first half of the 20th century, with particular emphasis on the 1950s. The museum collection consists of tin toys, dolls, soldiers, and fabric animals as well as musical instruments.