An overlooked Brutalist gem, the Isthmia Prime Hotel was built in the late 1960s by two friends, composer Iannis Xenakis and urban planner Panos Spiliotakos. Xenakis was a Greek artist and composer with a degree in engineering. Escaping the horrors of the Greek Civil War in 1947, he worked under the architect Le Corbusier in Paris. Xenakis helped design the Unite D’Habitation and Couvent De La Tourette projects, two of the most recognized Brutalist architecture sites worldwide. It was during that time when Xenakis realized how much music and architecture…