SOUNIO (Temple of Poseidon) and Lake Vouliagmeni. Bus ride is about 1 hour to the Lake and 1 hour from the lake to the Temple of Poseidon. You can buy food in the lake, and enjoy swimming. There are rooms to change, even they have hair dryers. The bus is ours all day, so you can bring anything and leave it in the bus, change of clothes, towels, etc. Bring snacks. In Temple of Poseidon there will be a walk towards a hill and it is very windy in the top. Gia and Rene’s note: Bring cash for dinner, credit card machine never works!