2004 Madrid, Spain train bombings (193 deaths, 2050 injured)
2005 London UK public transport bombings (52 deaths, 784 injured)
2015 Île-de-France shooting (20 deaths, 22 injured)
2015 Paris, France - Charlie Hebdo shooting (12 deaths, 11 injured)
2015 Paris, France - Bataclan Theatre street shooting & bombing (130 deaths, 416 injured)
2016 Istanbul, Turkey square bombing (13 deaths, 9 injured)
2016 Nice, France truck attack (86 deaths, 434 injured)
2016 Istanbul, Turkey airport bombings and shooting (45 deaths, 230+ injured)
2016 Bruxelles, Belgium bombings (32 deaths, 340 injured)
2016 Berlin, Germany truck attack & shooting (11 deaths, 56 injured)
2017 Istanbul, Turkey nightclub shooting (39 deaths, 79 injured)
2017 St Petersburg, Russia metro bombing (14 deaths, 64 injured)
2017 Manchester, UK arena bombing (23 deaths, 800+ injured)
2017 London, UK bridge attack - stabbing and vehicle attack (8 deaths, 48 injured)
2017 Barcelona, Spain van attack (8 deaths, 152 injured)
Many injured were in critical condition.
Main targets: France, United Kingdom (mainly England), Germany, also Turkey, Russia and Spain. Attacks have also occured in Belgium. 1st attack in Austria and deadly. Targets are also Scandinavian countries, mainly Sweden and Denmark (I think that no attack in Norway, they have their own idiots), an attack also happened in Finland a Nordic neighbor. And also the Netherlands.
So far Italy has been "avoided" from big attacks. The police and services of Denmark seem to deflect the best attacks in Western Europe.