The TOR Browser can be used to visit the so called Dark or Deep Web. It is not possible to visit .onion domains with a normal browser.
By using the TOR Browser, you can visit websites that are for example blocked for the country that you are in. It is also being used by journalists that want their idendity kept hidden.
But because users of the TOR network can use it with a pretty high degree of anonymity, there are also lots of illegal activities and websites to be found there. So our advise is to be careful when browsing the TOR Network.
There are however some search engines that you can use to find what you are looking for. So we made a list of the best TOR search engines.