I added another website to my Free Genealogy Resources page. This is for the Chester County PA Archives and Records site. Chester County is one of those counties who have moved their historic records out of the courthouse and into an off-site government building. This one is located on Westtown Road (see the exact address on their website). It is outside of the downtown area and there is free parking available in the on-site lot.
If you are planning a visit, you can make the most of your time there by first checking the online indexes on their website. If you have never visited the website, you will probably be surprised by how much information they have online. If you are planning a visit, going to the website in advance will allow to check through most of their collections for records of interest. Just record the appropriate call-numbers so you can request them when you get there.
The building on Westtown Road houses more than just the archives, so you will have to go through a security check point when you enter. The archives are in basement level, but everything is very clean and well organized. There are several microreaders available, as many records have been filmed and are self-serve. The staff has always been very helpful the times I have been there.