Cities that draw tourists like flies are bound to make them targets for petty crime and fraud.
In most major European capitals and large cities you are likely to find an area resembling the red light districts made famous by Soho in London and Amsterdam's sex trade.
Likewise, locations of famous monuments and other popular sights, where visitors crowd together, are usually rife with pickpockets and scammers, depending on how well they are policed by the local constabulary.
Here, local residents offer their views of some streets that have become infamous for the sleazy, seedier sides of life, and they offer up their tips for tourists. Some locations have earned their reputations or are going downhill, some have cleaned themselves up.