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https://postojnsko.si/travel/wp-content/uploads/2023/04/obcina-postojna-visit-postojna-foto-bostjan-martinjak-2-scaled.jpg25601691The historicist-designed building with a varied and picturesque facade was built in 1908. At first, it was the seat of the district administration. In 1928, on the second floor of the building, the speleological institute got its premises, which was advocated by Ivan Andrej Perko (1876–1941), the first Slovenian professional speleologist and karstologist, and director...