stephan even saw a party on a beach. >> the americans who go to north korea are those who are curious about the recent history. perhaps they have a family connection. curious about geopolitics. some are country collectors. and some are interested in communism and you even meet a few true believers. >> reporter: analysts say most of the americans who travel on these tours typically don't venture into religion and those who do are risking hard labor or even their lives. >> christianity disagrees with the fundamental ideology of the regime. the worship of the leader. >> analysts say the north koreans see any independent religious activity as a security threat and are looking out for any semblance of it. kenneth bae has been detained for a year and a half and australian missionary jailed briefly this year for distributing religious materials on a tourist trip was suggest to grueling interrogation sessions.