The biggest wave ever recorded was in Alaska!
The 1958 Lituya Bay megatsunami occurred on July 9, when a large, 8.3 magnitude earthquake on the Fairweather Fault triggered a landslide that caused 30 million cubic metres of rock and ice to fall into the narrow inlet of Lituya Bay, Alaska. The sudden displacement of water resulted in a wave runup of 524 metres (1,720 feet) in height. This is the highest recorded megatsunami and the largest known in modern times. The event forced a re-evaluation of large wave events, and recognition of impact and landslide events as a previously unknown cause of very large waves.
Pretty crazy to think about what happened back then!
Alea iacta est ("The die has been cast")