Ouranoupolis, Chalkidiki

The provided wikitext does not contain information about a specific castle named "Ouranoupolis." Instead, the text describes Chalkidiki, a large peninsula and regional unit in Central Macedonia, Greece. Consequently, no details regarding the construction year, architectural style, or specific history of a castle in Ouranoupolis can be extracted from this source. The content focuses entirely on the broader geography and administration of the Chalkidiki region rather than individual fortifications within it.

Chalkidiki is a prominent summer tourist destination located in coastal Macedonia, with Polygyros serving as its capital and Nea Moudania as its largest town. The peninsula is geographically distinct, resembling a hand with three fingers: Kassandra, Sithonia, and Mount Athos. These landmasses are separated by the Toronean and Singitic Gulfs. The area features diverse terrain, including the Cholomontas mountains in the north-central region and various rivers flowing south to the Aegean Sea. The easternmost finger, Mount Athos, is an autonomous monastic polity known for its religious significance and high peaks.

Historically, the region derives its name from the ancient Greek city-state of Chalcis in Euboea, which colonized the area during the 8th century BC. Today, Chalkidiki borders the regional unit of Thessaloniki to the north and is bounded by the Thermaic Gulf to the west and the Strymonian Gulf to the east. It hosts numerous inhabited and uninhabited islands, such as Ammouliani and Diaporos. While the text mentions several coastal resorts and villages like Nikiti and Neos Marmaras, it offers no specific data on castles or fortifications in Ouranoupolis, limiting any summary to the general characteristics of the peninsula itself.