Tourism thumb|Tourists in the town of Mykonos, part of the Cyclades The Aegean islands within the Aegean Sea are significant tourist destinations. Tourism to the Aegean islands contributes a significant portion of tourism in Greece, especially since the second half of the 20th century. A total of five UNESCO World Heritage sites are located the Aegean Islands; these include the Monastery of Saint John the Theologian and the Cave of the Apocalypse on Patmos,Centre, UNESCO World Heritage. "The Historic Centre (Chorá) with the Monastery of Saint-John the Theologian and the Cave of the Apocalypse on the Island of Pátmos". whc.unesco.org. Retrieved 8 September 2016. the Pythagoreion and Heraion of Samos in Samos, the Nea Moni of Chios,"Monasteries of Daphni, Hosios Loukas and Nea Moni of Chios". UNESCO. Retrieved 30 September 2012. the island of Delos,Centre, UNESCO World Heritage. "Delos". whc.unesco.org. Retrieved 7 September 2016. and the Medieval City of Rhodes.Centre, UNESCO World Heritage. "Medieval City of Rhodes". whc.unesco.org. Retrieved 7 September 2016.
Tourism thumb|Tourists in the town of Mykonos part of the Cyclades The Aegean islands within the Aegean Sea are significant tourist destinations Tourism to the Aegean islands contributes a significant portion of tourism in Greece especially since the second half of the 20th century A total of five UNESCO World Heritage sites are located the Aegean Islands; these include the Monastery of Saint John the Theologian and the Cave of the Apocalypse on PatmosCentre UNESCO World Heritage "The Historic Centre (Chorá) with the Monastery of Saint-John the Theologian and the Cave of the Apocalypse on the Island of Pátmos" whcunescoorg Retrieved 8 September 2016 the Pythagoreion and Heraion of Samos in Samos the Nea Moni of Chios"Monasteries of Daphni Hosios Loukas and Nea Moni of Chios" UNESCO Retrieved 30 September 2012 the island of DelosCentre UNESCO World Heritage "Delos" whcunescoorg Retrieved 7 September 2016 and the Medieval City of RhodesCentre UNESCO World Heritage "Medieval City of Rhodes" whcunescoorg Retrieved 7 September 2016