Go back to websites you already visited in Safari on Mac
Safari remembers the websites you’ve visited for as long as a year, so you can easily return to them.
See websites you visited
Go to the Safari app
on your Mac.Do any of the following:
See websites you visited in the current window or tab: Click
or 
in the toolbar.You can also click and hold
or to choose a specific website. If you have a trackpad or mouse that supports gestures, swipe left or right to move through your history one website at a time. See View and customize mouse or trackpad gestures.See a longer list of recently visited websites: Click the History menu.
See all websites in your browsing history: Choose History > Show All History.
See websites from recently closed tabs or windows
Go to the Safari app
on your Mac.Choose History > Recently Closed.
You can also choose History > Reopen Last Closed Tab or History > Reopen Last Closed Window to reopen the last tab or window you closed, or Reopen All Windows from Last Session.
Visit webpages in your Reading List
Go to the Safari app
on your Mac.Click
in the toolbar.Click Reading List.
See Keep a Reading List.
Safari uses iCloud to keep your browsing history the same on your iPhone, iPad, iPod touch, and Mac computers that have iCloud set up for Safari. Your Mac can keep your browsing history for as long as a year, while some iPhone, iPad, and iPod touch models keep browsing history for a month. To change how often your Mac removes items from your history, see Change General settings.