What year was the Science Academy of Lisbon founded ?
This unit incorporated the former National Museum of Natural History and the University of Lisbon Science Museum , integrating their collections , the old buildings of the Polytechnic School , the Lisbon Botanical Gardens and the Lisbon Astronomical Observatory ( this one since July 2012 ) : The National Museum of Natural History had its origins in the Royal Natural History Museum and Botanical Garden , created in the second half of the eighteenth century , in Ajuda ( western section of Lisbon ) .