[Kamińska E. (2007). With history in the background: fortress tourism. Wiadomooeci Turystyczne 150(24), 14-15. [in Polish]]Search in Google Scholar
[Wojewódzki Urząd Ochrony Zabytków. (2011). A list of monuments in Wałbrzych county. http://wosoz.ibip.wroc.pl/public/?id=92696. [in Polish] ]Search in Google Scholar
[Koźma J., Cwojdziñski S., Ihnatowicz A., Pacuła J., Zagożdżon P.P., Zagożdżon K.D. (2011). Possibilities for developing geotourism in the Lower Silesia Region based on selected projects concerning inventory and valorization of geological sites. In A. Żelaźniewicz, J. Wojewoda, W. Ciężkowski (Eds.), Mesozoic and Cenozoic of Lower Silesia (pp. 137-158). Wrocław: WIND. [in Polish] ]Search in Google Scholar
[Aniszewski M., Zagórski P. (2006). Military secrets. The underground world of the Owl Mountains. Kraków: Technol. [in Polish] ]Search in Google Scholar
[Cera J. (1998). Secrets of the Owl Mountains. Kraków: AURH Inter Cera. [in Polish] ]Search in Google Scholar
[Rostkowski J. (2010). The underground of the Third Reich: The secrets of Książ, Wałbrzych and Szczawna-Zdroj. Poznañ: Rebis. [in Polish] ]Search in Google Scholar
[Rdułtowski B. (2012). The hunt for Wunderwaffe - Hitler's secret weapon from the Owl Mountains. Kraków: Technol. ]Search in Google Scholar
[Mołdawa M. (1990). Gross-Rosen: Concentration camp in Silesia. Warszawa: Wydawnictwo Bellona. [in Polish] ]Search in Google Scholar
[Sula D. (2003). Labor camp Riese. KL branch Gross-Rosen. Wałbrzych: Muzeum Gross-Rosen. [in Polish]]Search in Google Scholar
[Isaac R.K., Ashworth G.J. (2012). Moving from pilgrimage to dark tourism: leveraging tourism in Palestine. Tourism Culture & Communication 11(3), 149-164. DOI: 10.3727/ 109830412X13346876802194.10.3727/109830412X13346876802158]Search in Google Scholar
[Gatewood J.B., Cameron C.M. (2004). Battlefield pilgrims at Gettysburg National Military Park. Ethnology 43(3), 193-216. DOI: 1G1-122990743. 10.2307/3774062]Search in Google Scholar
[Smith V.L. (1998). War and tourism: an American ethnography. Annals of Tourism Research 25(1), 202-227. DOI: 10. 1016/S0160-7383(97)00086-8. 10.1016/S0160-7383(97)00086-8]Search in Google Scholar
[Henderson J.C. (2000). War as a tourist attraction: the case of Vietnam. International Journal of Tourism Research 2(4), 269-280. DOI: 10.1002/1522-1970(200007/08)2:4<269: :AID-JTR219>3.0.CO;2-A. ]Search in Google Scholar
[Winter C. (2011). Battlefield visitor motivations: explorations in the Great War Town of Ieper, Belgium. International Journal of Tourism Research 13(2), 164-176. DOI: 10. 1002/jtr.806. ]Search in Google Scholar
[Jędrysiak T., Mikos von Rohrscheidt A. (2011). Military cultural tourism. Warszawa: Polskie Wydawnictwo Ekonomiczne. [in Polish] ]Search in Google Scholar
[Dwork D., Van Pelt R.J. (1996). Auschwitz: 1270 to the present. New York: W.W. Norton. ]Search in Google Scholar
[Miller D.S., Gonzalez C. (2013). When death is the destination: the business of death tourism - despite legal and social implications. International Journal of Culture, Tourism, and Hospitality Research 7(3), 293-306. DOI: 10.1108/IJCTHR-05-2012-0042. 10.1108/IJCTHR-05-2012-0042]Search in Google Scholar
[Tunbridge J.E., Ashworth G.J. (1996). Dissonant heritage: the management of the past as a resource in conflict. Chichester: Wiley. ]Search in Google Scholar
[Wight C. (2006). Philosophical and methodological praxes in dark tourism: controversy. contention and the evolving paradigm. Journal of Vacation Marketing 12(2), 119-129. DOI: 10.1177/1356766706062151. 10.1177/1356766706062151]Search in Google Scholar
[Cohen E.H. (2011). Educational dark tourism at an in Populo Site: The Holocaust Museum in Jerusalem. Annals of Tourism Research 38(1), 193-209. DOI: 10.1016/j.annals. 2010.08.003. ]Search in Google Scholar
[Cooper M. (2006). The Pacific War Battlefields: tourist attractions or war memorials? International Journal of Tourism Research 8(3), 213-222. DOI: 10.1002/jtr.566. 10.1002/jtr.566]Search in Google Scholar
[Winter C. (2009). Tourism, social memory and the Great War. Annals of Tourism Research 36(4), 607-626. DOI: 10.1016/ j.annals.2009.05.002. 10.1016/j.annals.2009.05.002]Search in Google Scholar
[MacCannell D. (2012). On the ethical stake in tourism research. Tourism Geographies 14(1), 183-194. DOI: 10.1080/ 14616688.2012.639387. 10.1080/14616688.2012.639387]Search in Google Scholar
[Lemelin R.H., Whyte K.P., Johansen K., Desbiolles F.H., Wilson C., Hemming S. (2013). Conflicts, battlefields, indigenous peoples and tourism: addressing dissonant heritage in warfare tourism in Australia and North America in the twenty-first century. International Journal of Culture, Tourism, and Hospitality Research 7(3), 257-271. DOI: 10. 1108/IJCTHR-05-2012-0038. 10.1108/IJCTHR-05-2012-0038]Search in Google Scholar
[Dunkley R., Morgan N., Westwood S. (2011). Visiting the trenches: exploring meanings and motivations in battlefield tourism. Tourism Management 32(4), 860-868. DOI: 10.1016/ j.tourman.2010.07.011. 10.1016/j.tourman.2010.07.011]Search in Google Scholar
[Tanaś S. (2008). The perception of death in cultural tourism. Turyzm 18(1), 51-63. [in Polish] 10.18778/0867-5856.18.1.05]Search in Google Scholar
[Novelli M. (2005). Niche tourism. Contemporary issues: trends and cases. Burlington: Elsevier. ]Search in Google Scholar
[Biran A., Hyde K.F. (2013). New perspectives on dark tourism. International Journal of Culture, Tourism, and Hospitality Research 7(3), 191-198. DOI: 10.1108/IJCTHR-05-2013-0032. 10.1108/IJCTHR-05-2013-0032]Search in Google Scholar
[Wilson J. (2008). Prison: cultural memory and dark tourism. New York: Peter Lang Publishing. 10.3726/978-1-4539-0359-9]Search in Google Scholar
[Bollag B. (1999). In the shadow of Auschwitz: teaching the Holocaust in Poland. American Educator 23(1), 38-49. ]Search in Google Scholar
[Foley M., Lennon J.J. (1996). JFK and dark tourism: a fascination with assassination. International Journal of Heritage Studies 2(4), 198-211. DOI: 10.1080/13527259608722175. 10.1080/13527259608722175]Search in Google Scholar
[Seaton A.V. (1996). Guided by the dark: from thanatopsis to thanatourism. International Journal of Heritage Studies 2(4), 234-244. DOI: 10.1080/13527259608722178. 10.1080/13527259608722178]Search in Google Scholar
[Stone P., Sharpley R. (2008). Consuming dark tourism: a thanatological perspective. Annals of Tourism Research 35(2), 574-595. DOI: 10.1016/j.annals.2008.02.003 10.1016/j.annals.2008.02.003]Search in Google Scholar
[Etxeberria A.I., Asensio M., Vicent N., Cuenca J.M. (2012). Mobile devices: a tool for tourism and learning at archaeological sites. International Journal of Web Based Communities 8(1), 57-62. DOI: 10.1504/IJWBC.2012.044682.10.1504/IJWBC.2012.044682]Search in Google Scholar
[Pinder D. (2005). Arts of urban exploration. Cultural Geographies 12(4), 383-411. DOI: 10.1191/1474474005eu347oa.10.1191/1474474005eu347oa]Search in Google Scholar
[Główny Urząd Statystyczny. (2012). Database of local data. http://www.stat.gov.pl/bdl/app/strona.html?p_name=indeks. [in Polish] ]Search in Google Scholar
[Agencja Rozwoju Regionalnego. (2008). Strategy of the Owl Mountains Subregion. http://turystyka.dolnyslask.pl/pliki/Strategia_Gory_Sowie.pdf. [in Polish] ]Search in Google Scholar
[Gubański J. (2008). Inactive railway lines in highly valuable landscapes. Prace Komisji Krajobrazu Kulturowego 10, 186-196. [in Polish] ]Search in Google Scholar