Would a Tsunami Knock over a Skyscraper?

Remember, tsunamis are rarely a single, giant wave: more commonly, they're like a tide that just keeps coming in. Unless you're talking about a tsunami from an asteroid impact or something, it probably won't be knocking down skyscrapers.

Can a building withstand a tsunami?

Architects and engineers can design buildings that will stand tall during even the most violent earthquakes. ... While no building is tsunami-proof, some buildings can be designed to resist forceful waves.

Can a tsunami wave be as tall as a skyscraper?

The notion of a taller-than-skyscraper, so called "megatsunami" is not new - with the often-reported 524m (1720 feet) high Lituya Bay tsunami of 1958 is sometimes referred as such (despite the wave not reaching that high).