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Hi there, Why are you looking to migrate the subdomains to subdirectories? In general, the most "natural" URL structure for a city organization would be: yourdomain.com/city/category/ since you will be able to consolidate all the popularity that you can attract to the different cities to your main domain structure and on the other hand, optimize (as you should be already doing with your subdomains) every landing page targeting each city. Nonetheless, if you're already ranking with these subdomains for your keywords related to these cities the effort and substancial benefit that you might look to get might not compensate the effort -only if you see that you're not ranking with this structure and look to consolidate popularity-. What is definitely fundamental that you do whether you decide to keep the subdomains or migrate to the subdirectories is that each city page (and its subpages) should feature unique, relevant content optimize for them. This shouldn't be necessarily difficult to achieve if you organize and optimize your structure to show: The name of each city in the titles, meta descriptions, headings. Add your specific office address in each city. Add your telephone number in each city. Enable and promote user generated content, like reviews, comments, ratings targeting each city. Create different offers or promotions for each city. Like this, despite the fact that these city landing pages might feature similar offering (which is normal since they're the same business at the end) the content will be unique for each one of them. I hope this helps. If you still have any doubts, please let me know. Aleyda