I have been searching for a way to change the logo URL to header. Now, the destination page is homepage and I would like It to be another website, is that possible?
The URL used on the logo is the homepage URL (same as the site title or the ‘home’ menu indicator). This is obtained using WordPress’ home_url() function. To make that link point elsewhere you’d need to customize theme code or write javascript that overrides the logo link’s behaviour.