AthensGuide.org: Resource offers a detailed guide of the city and the Saronic island; includes details on museums, sights to see, and recreation.
East Attica: Official site of the municipality; includes information on sightseeing, accommodation, entertainment and transportation.
Marathon: Official site of the municipality, including information about its services, economy, tourism and public notices.
Methana.com: Tourist information, photos of villages, and technical information about the processes that formed the landscape. Links to geological information in English and German.