In the Algarve there is an artificial diving site. Located off the coast of Portimão, you can dive among shipwrecks.
In the south of the country, in Portimão, you can dive in the "Ocean Revival" park where there are four shipwrecks. This atypical site is totally artificial because the boats, former warships, were voluntarily sunk. The objective was to create a very attractive place for the amateurs of wreck diving. Fortunately, the boats have been decontaminated and host a whole marine ecosystem that divers can explore.
This experience is for advanced divers only.