Living on the edge of a tectonic plate can be quite dangerous. Especially in a subduction zone where a plate is forced under (subducts) another one. This can lead to a megathrust earthquake. In terms of magnitude these are the killer quakes, with a magnitude higher than 8.5.  Here’s our list of largest earthquakes since 1900. In magnitude (M), not in death toll:

1. Assam Tibet – 8.5 M / 15-08-1950
2. Northern Sumatra – 8.6 M / 28-03-2005
3. Rat Islands (Alaska) – 8.7 M / 04-02-1965
4. Off the Coast of Equador – 8.8 M / 31-01-1906
5. Offshore Maule (Chile) – 8.8 M / 27-02-2010
6. Kamtchatka – 9.0 M / 04-11-1952
7. Near the East Coast of Honshu (Japan) – 9.0 M / 11-03-2011
8. Off the West Coast of Sumatra – 9.1 M / 26-12-2004
9. Prince William Sound, Alaska – 9.2 M / 28-03-1964
10. Chile – 9.5 M / 22-05-1960

source