Budapest, Pusztaszeri út 35, 1025 Magyarország | Szemlő-hegyi Cave (Barlang), 1025 Budapest, Pusztaszeri út 35. Travel time from the center is roughly 45 minutes by public transport. From Pest downtown, catch bus 9 towards Óbuda, Bogdáni út and disembark at Kolosy Square. Walk down on to Lajos Street until you reach Szepvolgyi Street and then turn to the right. Walk 100 meters until you reach the bus terminal. From Kolosy Square, you should catch bus 29 and get off at Szemlő-hegyi Barlang, 5 stops from Kolosy Square.