The Garden of Eden is a spiritual metaphor.
The Garden of Eden is not a real place on earth.
The Garden of Eden is one of the many names for God-self-realization.
When the true inner self (inner spirit and inner witness) begins to use sensory input and sensations of the physical body as its primary source of knowledge, it begins to lose its remembrance that it is...or was eternal spirit, the inner spirit (self awareness or soul) casts itself out of paradise (the place of perfect eternal happiness...also called Heaven, Nirvana, Samadhi, God union, etc. etc.).