- http://ermakvagus.com Europe/Bulgaria/Perperikon/…Greek historian Herodotus stated that Persian king Xerxes visited the Perperikon mountain and talked to the oracle about his future war with the Greeks.
- perperikonbulgaria.wordpress.com perperikon/
- The Altars of Perperikon
- The Christian Perperikon
- The Regional Centre and Episcopal Residence at the Foot of Perperikon
- freeplovdivtour.com blog/perperikon_the_city_of_…The half-ruined Thracian city of Perperikon (website of the location) is one of the most fascinating destinations in Bulgaria.
- bulgariatravel.org medieval-archaeological-…The medieval archaeological complex Perperikon is one of the most ancient monumental megalithic structures, entirely carved into the rocks.
- tr.wiki34.com wiki/PerperikonPerperikon adı Orta Çağ'dan, 11. yüzyıldan 13. yüzyıla kadar uzanır. Orijinal adı Hyperperakion, yazıcılar tarafından Perperakion veya Perperikon olarak...
- itinari.com exploring-perperikon-and-its-…You can reach it by car, and there is spacious parking just next to the entrance of the place. Perperikon is a part of the Rodopa mountain range.
- nicodia.com ?page_id=1437The medieval archaeological complex Perperikon is one of the most ancient monumental megalithic structures, entirely carved into the rocks.
- pbase.com andreev22/perperikonIf you are interested in the history and myths, you can find a lot of information on the official Perperikon site: http://www.perperikon.bg/.
- demo-demo-demo-demo-demo.blogspot.com 2015/02/…Arkeolojik araştırmalara göre, Perperikon’daki ilk yaşam izleri 6 000 yıl önceden, Bakır Taş Çağındandır.
- tr.brilliant-tourism.com 12510324-archaeological-…Perperikon, Kırcaali'nin 20 km kuzeydoğusunda, Doğu Rodoplarda bulunan kayalık bir şehir olan ortaçağ dönemine ait bir arkeolojik komplekstir.