Kos © Karelj
Kos is a favourite holiday destination for families. Its highlights include beautiful beaches, enchanting ruins and quick ferry crossings to Rhodes or Bodrum (Turkey).

In antiquity, Kos may have had some claim to being a healing retreat. The famous Classical Age physician, Hippocrates, reputedly taught his students on the island, and visitors can still see the remains of temples dedicated to healing deities. Kos is also home to what some claim is Europe's oldest tree, plus several archaeological remains of Persian, Turkish, Roman and Byzantine conquerors.

Otherwise, visitors can expect busy bars, pleasant towns and crowded beaches outside the capital.


See our separate guides to the following Kos holiday resorts: Kardamena, Kefalos and Kos Town


Knight's Castle
Knight's Castle © Max Detheridge-Smith

Knights Castle

The Castle of the Knights of the Order of Saint John is situated at the entrance of Kos harbour and is an amazing place to visit. The sprawling ruins, some of which are extremely well-preserved, are located on what used to be an island and the bridge which once joined it to the mainland is still usable. Parts of the castle date back to the late 14th century but as it took over a hundred years to build there is evidence of more than one architectural style at the site. The castle has two defensive precincts: the interior has four circular corner towers and the larger exterior precinct has massive bastions in its four corners, battlements and gun ports. The two precincts are separated by a moat and joined by a drawbridge. There is a Hellenistic frieze over the main gate. A museum on the site, which is housed in a reconstructed building that was once the knights' warehouse, holds alters, sculptures and inscriptions from the site. The elevated sections of the castle afford visitors astounding views over the ocean. It is best to wear sensible walking shoes when visiting as exploring the castle thoroughly means traversing some steep steps and uneven ground.

Address: Kos harbour entrance; Website: www.kosinfo.gr/sightseeing/castle-of-knights

Kos Archaeological Museum
Kos Archaeological Museum © Tedmek

Kos Archaeological Museum

Displaying mainly Hellenistic and Roman treasures found in and around Kos Town and dating from as far back as the 3rd century BC, the Archaeological Museum allows visitors a glimpse into the former glory enjoyed by this quaint port town. The museum is in Eleutherias Square and is housed in a two-storey neoclassical building which is itself a monument, dating back to 1935 and the Italian occupation. The museum's collection includes artefacts and archaeological findings from Kos and surrounds and even Rhodes and there are pieces on display from sites like ancient Asklepeion, the Altar of Dionysus, the Odeon and the Roman Residence. From original mosaics of Hippocrates, who taught here, to statues of Asklepieion, Artemis and Hygeia found north of Decumanus Maximus, a trip to the Archaeological Museum provides a good foundation of knowledge for visitors who plan to explore the surrounding sites. Many remarkable and valuable sculptures, mosaics and coins, among other things, are on display and the museum is well arranged and labelled. Regrettably, this wonderful museum has been closed recently for renovation and it is unclear when it is due to reopen. To avoid disappointment, check beforehand whether visitors are being admitted.

Address: Plateia Eleftherias; Website: www.kosinfo.gr/sightseeing/archaeological

Patmos © Chris Vlachos


This island, sometimes called the 'Jerusalem of the Aegean', is an official pilgrimage site for members of the Catholic religion, because it is home to the sacred cavern where the exiled St John the Evangelist was inspired to write the Biblical Book of Revelations. Cruise ships and ferries keep the small port very active, disgorging visitors who wish to visit the holy cave and witness the cracks in the wall, said to have appeared when St John heard the voice of the Lord. The small Monastery of the Apocalypse is very close to the cave and both are worth exploring. The small and lovely Chapel of St Anne encloses the cave and was built in the 11th century. Crowning the island is the immense Monastery of St John, with its buttressed walls and, inside, frescoes, icons, tapestries and pendants made of precious stones. The monastery was completed in the 11th century and it is a richly decorated fortress with spectacular views, that would be fascinating to explore no matter what your religious beliefs. The historical centre of Patmos, including the monastery and the sacred cave, are a UNESCO World Heritage Site. Visitors can walk up to the monastery from Skala along the Byzantine path.