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Quinta da Regaleira, Sintra, Portugal. The property owner built tunnels, grottoes and ponds all over the property. That green stuff is water, and a big sign declared it 80 cm deep.
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Quinta da Regaleira, Sintra, Portugal. The property owner built tunnels, grottoes and ponds all over the property. That green stuff is water, and a big sign declared it 80 cm deep.