Pokémon GO players in Europe can expect a series of Pokémon GO Safari Zone events in August and September at select Unibail-Rodamco locations throughout Europe, including Fisketorvet in Copenhagen, Denmark; Centrum Černý Most in Prague, Czech Republic; Mall of Scandinavia in Stockholm, Sweden; Stadshart Amstelveen in Amsterdam, the Netherlands; CentrO in Oberhausen, Germany; Les Quatre Temps in Paris, France; and La Maquinista in Barcelona, Spain. These events will give Trainers the opportunity to catch a wide variety of Pokémon, including some Pokémon never encountered in Europe before. You can visit the offiical events page for more details.
Source: Official Pokémon GO Team