Piraeus is easily the third largest port in the Mediterranean as well as the gateway to the beautiful Aegean islands. Ferries leave constantly for the Saronic Islands of Aegina, Poros, Spetse and Hydra, as well as to Crete, Tinos, Andros, Santorini, Naxos, Syros, Lesvos, Chios, Mykonos, Paros and the other Dodecanese and Cyclades islands. Piraeus has been the port of Athens since classical times, protected by Long Walls connected to the capital, parts of which can still be seen today. The port provides an easy to understand system of gates for travellers to all island destinations by the ferries that operate the long and short routes to the Cyclades and Dodecanese islands. Fast onward travel from Piraeus is provided to Athens by a rail connection on Metro line 1. Piraeus port is located at latitude 37°56′ North, 23°38′ East, and consists of Megas Limin (Grand Harbour) leading out to the Limin Leondos (Outer Harbour) and the two breakwaters.