It is possible to visit North Korea as a tourist - under strict conditions - but it is not your average holiday destination.

Yet using routes officially closed to foreigners, tourist Helmut Uttenthaler was able to access the "Hermit Kingdom" on an epic journey from the Austrian capital Vienna to Pyongyang.

Once inside North Korea, Uttenthaler captured rare footage of the early morning wake-up call for Pyongyang citizens.

The song, "Where Are You, Dear General" is played over loudspeakers for all to hear.

To visit North Korea, you must book a pre-planned tour with two North Korean guides, who have to be specifically appointed by the country's Ministry of Tourism and associated with one of the three travel services based in Pyongyang.

Tourists travelling along on a private tour must also be accompanied by two official guides.

In 2015, North Korean tourism officials said the state wanted to attract two million visitors a year by 2020 - but currently only 100,000 tourists enter annually.

The Foreign and Commonwealth Office states that the situation on the Korean Peninsula is tense following North Korea's ballistic missile test launches.

"The situation in Pyongyang remains calm but the level of tension on the Korean peninsula can change with little notice. You should follow the political and security situation closely and stay in touch with your host organisation or tour operator," the FCO advises.

"British nationals resident in or travelling to the DPRK who are not with tour groups should inform the British Embassy in Pyongyang about their travel plans prior to, or on arrival."