A Norwegian who killed 77 people is suing over prison conditions - these photos show how luxurious Norwegian prisons are

Norway's prison system is known as one of the most humane in the entire world.

But that hasn't stopped right-wing extremist, Anders Breivik, who killed 77 people in Norway in 2011, from suing the state for alleged violations of his human rights at Oslo Prison.

At Oslo, Breivik's cell has three rooms, complete with a computer, television, and game console, according to Agence France-Presse. His prison, luxurious by US standards, isn't an anomaly, either.

"This is prison utopia," American prison warden James Conway said in "The Norden," a made-for-TV documentary, when he visited Halden, another Norwegian prison, in 2014. "I don't think you can go any more liberal - other than giving the inmates the keys."

Halden's 75-acre facility tries to maintain as much normalcy as possible, an important concept in the Norwegian prison system, Jan Stromnes, deputy head of the prison, said in the documentary. That means no bars on the windows, fully equipped kitchens, and friendships between guards and inmates.

"Every inmates in Norwegian prison are going back to the society," Are Hoidel, Halden's director, said in another production by Gughi Fassino and Emanuela ZuccalÀ. "Do you want people who are angry - or people who are rehabilitated?"

Like many prisons, Halden seeks to prepare inmates for life on the outside with vocational programs: wood-working, assembly workshops, and even a recording studio.

Norway hasn't imposed the death penalty since 1979. Life sentences don't exist, putting the focus on rehabilitation instead of punishment.

The Scandinavian country has an incarceration rate of 71 per 100,000, totaling 3,710 inmates for the entire country. The US' rate is nearly 10 times Norway's - 698 per 100,000, or 2,217,000 people behind bars. The US has the highest rate in the entire world.

The photos below paint a picture of life at Halden.