A new book documenting their 1970s design gives a rare glimpse into North Korea's hospitality industry.
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Video caption: North Korea propaganda: New faces but old messages Pyongyang is believed to be behind several new YouTube and Twitter accounts aimed at foreign audiences.
Running a marathon in North Korea
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Video caption: Team GB snowboarder Aimee Fuller competes in one of the world's most secretive countries Team GB snowboarder Aimee Fuller took on a very different sporting challenge in one of the world's most secretive countries.
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Video caption: Xi-Kim meeting: Crowds welcome Chinese president to N Korea Xi Jinping arrives in Pyongyang for the first Chinese state visit to North Korea in about 14 years.
State-run KCTV aired Kim's arrival at Pyongyang from China
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Video caption: State-run KCTV aired Kim's arrival at Pyongyang from China The king of Pyongyang
Copyright: BBCWhen Kim Jong-un took on the mantle of North Korea's supreme leadership, he had little political or military experience.
So why was he chosen to lead one of the world's most secretive nations?
Rupert Wingfield-Hayes reports.
By Gareth Evans
BBC News
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Video caption: South Korean taekwondo team give Pyongyang performance There are high-flying kicks galore as South Korean taekwondo athletes show off their moves in Pyongyang.