We very much hope that you'll be able to find some time to explore the city of Volos.
Archaeological Museum of Volos
Museum of the City of Volos
For those of you who might consider spending some time in Athens before or after coming to Volos for the Symposium, here are some links to museums/venues/cultural events worth going:
MUSEUMS
National Archeological Museum of Athens
The Acropolis Museum
National Museum of Contemporary Art
Museum of Cycladic art
FESTIVALS-CULTURAL EVENTS
Athens and Epidauros Festival 2017
CULTURAL VENUES
Megaron - The Athens Concert Hall
Onassis Cultural Center
Stavros Niarchos Foundation Cultural Center