Naples hosts also the Astronomical Observatory of Capodimonte, established in 1812 by the king Joachim Murat and the astronomer Federigo Zuccari, the oldest marine zoological study station in the world, Stazione Zoologica Anton Dohrn, created in 1872 by German scientist Anton Dohrn, and the world's oldest permanent volcano observatory, the Vesuvius Observatory, founded in 1841. The Observatory lies on the slopes of Mount Vesuvius, near the city of Ercolano, and is now a permanent specialised institute of the .