William Weber, a LowEndTalk member, was raided by Austrian police in 2012 for operating a Tor exit node that was allegedly used to distribute child pornography. While he was not arrested, many of his computers and devices were confiscated. He was later found guilty of supporting the distribution of child pornography through his Tor exit node, though he claims it was unintentional and he was simply supporting free speech and anonymity. He was given a 5 year probation sentence but left Austria shortly after. Though some articles portray him negatively, it is debatable whether he intentionally supported child pornography distribution or simply operated in the legal grey area of Tor exit nodes.
But someone somewhere has to be an exit node. Not you, necessarily, in order to browse, but somebody has to be running them. Right?
Tor hidden sites are hosted on Tor nodes, so you don’t leave the Tor network to browse them.
Anyone with a Tor node can host a hidden site, and there are some more or less famous ones around. Some open web sites keep a hidden one as an alternative in case their domain gets taken down or blocked for whatever reason in whatever country.