History Vault
As its name suggests, History Vault provides a large number of historical films and documentaries with high-quality and exclusive content. If you are into historical background films that can not find on other platforms anymore, then this site is for you. There are lot of content that cannot see on the History Channel's prime-time lineup, such as some greatest stories in history like ancient civilizations, the World Wars, space exploration, or anything in between.
Moreover, some of the new videos are updated weekly, which can expand the coverage of historical content that is not only massive about the past but also the current documentaries about society. Some of them are 'The Story of Us', 'Ancient Discoveries', and 'Mysteries of the Bible'.
History Vault allows you to download offline on different devices, as well as supports portable apps for mobile platforms. Therefore, users can enjoy their historical documentaries anywhere at their own watching time. Starting your 7-day free trial is entailed, then just pay for $4.99 per month or $44.99 per year, and you can have access to watch commercial-free, full-length videos with no need for a TV provider.
Website: https://watch.historyvault.com/