While this was often the case many years ago it no longer is. There are some airlines or airports where tours or accommodations are offered on overnight connections but the accommodations one is much less common now.

QR still provides it at DOH in some cases: http://www.qatarairways.com/global/e...mmodation.page.

TK does, too: http://www.turkishairlines.com/en-in...rvice-requests.

And EK: http://www.emirates.com/us/english/p...i-connect.aspx.