Myrina is the capital and main harbor. It is the only town of any size. It is sometimes called Kastro, and has a castle built over a rocky promontory over its sandy shore.
The town is distinctly Limnian, although you can see Turkish and Thracian styled features. The kastro is not well preserved, but a walk up to it provides a good view. The kastro divides the waterfront into a Turkish harbor on the south where the commercial port is. To the north is the main long sandy beach called Romaikos. Much of the night life takes place along this section of the waterfront.
The north port includes the pretty beach Akti Myrina, which is where the Amazons of Limnos tossed their husbands into the sea. Off Romaikos Beach you can see the superb collection at the Archaeology Museum.
North of Myrina the beaches are rather pebbly, but good for children, especially at Riha Nera. Two other good beaches are Avlonas and Ag. Ioannis. North of Ag. Ioannis a rough track leads to a three-pronged promentory which is the best sunset watching spot on the island.
The beaches south of Myrina are more popular. The bays below Platis and Thanos are especially nice. Kontias, a lively red-tiled village further on, has a good beach. Kontias is also well-known for its ouzo. There's a Myceaean tower further south, as well as the sandy beach at Evgati.
The best beach is at Nea Koutalis. There's a Nautical Tradition Museum nearby.
The second largest town, with a military influence very evident, is Moudros. There are 800 graves in the British Commonwealth war cemetery at Moudros. Both the military and civilian airports are located in this area.
Northeast of the airport on Pournias Bay is the walled medieval capital of Kotsinas. The church here is Zoodochos Pigi, surrounded by a sleepy village. The wetlands nearby are full of pink flamingoes in winter. Many other birds migrate here and the area was made a conservation area a few years ago.
Across Tigani Bay, Chloi (or Kavirio) is the site of the sanctuary of the Underworld dieties. The foundations and some Doric columns from the sanctuary remain and are open for tours.
The most important archaeological site is Poliochne. Seven layers of civilization have been uncovered here. The oldest predates the Egyptian dynasties. Parts of all seven layers can be seen. The site was leveled by an earthquake in 2100 BC and was never rebuilt.