ghet-to[get-oh]
–noun, plural -tos, -toes.
1.a section...inhabited predominantly by members of an ethnic or other minority group, often as a result of social or economic restrictions, pressures, or hardships...
sanc-tu-ar-y[sangk-choo-er-ee]
–noun, plural -ar•ies.
...7.any place of refuge; asylum.
(Courtesy of dictionary.com)
Typically the popular imagination assigns these places opposite ends of the spectrum. Simply put, sanctuary is for the worthy few; a ghetto, the base underclass. You're expected to want into sanctuary, and expected to want the hell out of the ghetto. But things are rarely that simple.
There can be comfort and security among your own kind --no matter how low they may be -- and in 'knowing your place' though it be at the cost of greater possibilities and inclusiveness. The arrangement can also be expedient to the wider world: marginalizing problems is easier than confronting and resolving the dilemmas at their heart. Ask any politician. Just don't expect an honest answer.
Stripped of connotations ghettos and sanctuaries can appear as one and the same. And what would that look like? How about something like this?