Tilos is a tiny but beautiful Greek island that lets tourists rediscover the Greece of times past, it says. It has 19 beaches, 12 mountains with gushing natural springs, seven medieval castles, a Byzantine monastery, 200 churches, and hundreds of birds and flora species. 

But it is also indisputably 21st century in how its 745 residents live. It has achieved a green revolution beyond comparison, says Tilos mayor Maria Kamma.