The Garden of Eden was known to man in the Bible after the creation story was revealed by God.
According to the Bible, the Garden of Eden is located at the East of Eden.
Although the man was driven out of that garden as a result of sin, the exact location has long been debated, while some believed the Bible story of the existence of the Garden of Eden some consider it to be mythological.
Despite diverse scholars’ views and opinions, it is believed that the Garden of Eden is located at the head of the Persian Gulf, in southern Mesopotamia (presently Iraq) where the Tigris and Euphrates rivers run into the sea; and in Armenia.
For more information and understanding, read Genesis 2:4b-3: 24 and Genesis 2:10-14.