Halden prison could be the home, if convicted, of Norwegian gunman Anders Behring Breivik who killed dozens of people in a bomb attack and shooting spree.

But it could be home that Breivik would love to spend time in. Halden prison is one of the world's most luxurious prisons.

Halden, Norway's second largest prison with a capacity of 252 inmates, embodies the guiding principles of the country's penal system: that repressive prisons do not work and that treating prisoners humanely boosts their chances of reintegrating into society.

One trip to Halden will make you realise why it's the envy of other prisons around the world. Let's take a sneak peek into the prison.

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The windows are not fitted with bars, but thick glass is used instead.

Noted the fully furnished washroom in one of the cells?

Some 760,000 Euro were spent just on artworks, some of which commissioned to Norway's most renowned street artist, Dolk

The maximum sentence in Norway is 21 years, though this can be extended indefinitely in five year blocks as long as the prisoner is deemed a "high risk" for repeat offence

The well-stocked library at Halden contains not only books but magazines, CDs, and DVDs. 

Prison guards don't carry guns -- that creates unnecessary intimidation and social distance -- and they routinely eat meals and play sports with the inmates