Skid row isn't a real place; it's an expression that people use to refer to an area of town that's seedy and sketchy. If you go from riches to rags, you just might end up on skid row.
When you visit a city, one place to avoid is skid row. This is a term for a district, section, or neighborhood that is known for being frequented by folks who are either down on their luck or up to no good. Drunks stumble around on skid row, and it's also a likely place to get robbed.