Predjama

Predjama Castle (Slovene: Predjamski grad or grad Predjama, German: Höhlenburg Lueg, Italian: Castel Lueghi) is a Renaissance castle built within a cave mouth in south-central Slovenia, in the historical region of Inner Carniola. It is located in the village of Predjama, approximately 11 kilometres from the town of Postojna and 9 kilometres from Postojna Cave.

Bukovje (pronounced [ˈbuːkɔu̯jɛ]; German: Bukuje) is a village northwest of Postojna in the Inner Carniola region of Slovenia.

Šmihel pod Nanosom (pronounced [ˈʃmiːxɛu̯ pɔt ˈnaːnɔsɔm]; Italian: San Michele) is a village in the eastern foothills of Mount Nanos in the Municipality of Postojna in the Inner Carniola region of Slovenia.

Landol (pronounced [lanˈdou̯ː]; Italian: Landolo) is a village in the Municipality of Postojna in the Inner Carniola region of Slovenia.

Belsko (pronounced [ˈbeːlskɔ]) is a village northwest of Postojna in the Inner Carniola region of Slovenia.

Gorenje (pronounced [ɡɔˈɾeːnjɛ]; Italian: Goregna) is a village in the hills northwest of Postojna in the Inner Carniola region of Slovenia.

Strane (pronounced [ˈstɾaːnɛ]) is a small village below the eastern slopes of Mount Nanos in the Municipality of Postojna in the Inner Carniola region of Slovenia.

Claustra Alpium Iuliarum (Latin for 'Barrier of the Julian Alps'; hereby, the term Julian Alps refers to the wider mountainous and hilly region from the Julian Alps to the Kvarner Gulf) was a defense system within the Roman Empire between Italia and Pannonia that protected Italy from possible invasions from the East. It secured the Postojna Gate, the land link between the eastern and western part of the empire, and thus the Claustra represented an inner border defense of the empire. Unlike a linear rampart, the Claustra consisted of a series of interconnected fortifications with its center at Castra ad Fluvium Frigidum (in the area of today's town of Ajdovščina, the Vipava Valley); other important fortresses were Ad Pirum on today's Hrušica Plateau and Tarsatica, now a part of the city of Rijeka. They had been governed from the town of Aquileia.

Ad Pirum was a Roman fortress active during the time of the late Roman Empire. It is located on the Hrušica Plateau in southwestern Slovenia, in the hamlet of Hrušica in Podkraj. It was built in the 320s.

Studenec (pronounced [stuˈdɛːnəts]; Italian: Studenza) is a village west of Postojna in the Inner Carniola region of Slovenia. The local church in the settlement is dedicated to Saint Barbara and belongs to the Parish of Hrenovice.

Brezje pod Nanosom (pronounced [ˈbɾeːzjɛ pɔt ˈnaːnɔsɔm]; Italian: Bresie) is a small settlement below the eastern slopes of Mount Nanos in the Municipality of Postojna in the Inner Carniola region of Slovenia.