- Its impressive theater (5th century B.C).
- The temples of Dafniforos Apollo, Dionysus, Dimitra and Isida.
- The "mosaic house" (370 B.C.) with mosaic floors dating back to 4th century B.C.
- The ancient vault and the Macedonian tomb. Moreover, you may visit the ruins of fortifications, houses, palaestra, gymnasium as well as Roman purple dying facilities (2nd century A.C.).
- Ditiki Pili or West Gate, which was the central gate of ancient Eretria.
- The Archeological Museum with important findings from Eretria, Magoula, Amarintho and Lefkanti.
- The tower with the statues on the beach that has the characteristic inscription of “Amarinthias Artemidos” and belongs to Kanari family.
- The Museum of Modern Art of Peace and Chalkidismos. It includes paintings of Greek painter Vassilis Chalkidiotis (doctor, hematologist and professor at the Medical School of Modena University) and others.
- The neoclassical mansion (1847) of Kanari family. Konstantinos Kanaris, the captain of fire ships from island Psara, lived in Eretria from 1847 until 1864.
- The Pezonisi or Nisi ton Oneiron (Island of Dreams) covered with pine forests, which is connected to Eretria by a bridge.
- Geroda, a small settlement on mount Olympus.
- Swimming on the seaside of the settlement and the beaches W to Malakonta and E to Magoula and Amarintho.
- Water sports
- Celebration of the last Sunday of the Carnival and Clean Monday.
- Cultural events organized by the Municipal authorities during the summer.
- Feast in honor of Aghios Nikolaos on the 6th of December.
Feast in honor of Aghia Anna in Gerontas on the 24th and 25th of July.