Hundreds of buildings have been destroyed, either by the earthquake itself shaking all of Japan at a massive 8.9 magnitude (the largest recorded), or the unstoppable floods that followed. Homes have been literally shaken to powder or just swept up and washed away under the ground-shattering quake and huge tsunami swells.
To top it off, the Fukushima nuclear power plant suffered power outages after the backup generators were flooded, causing several cores to slowly overheat and leak radioactive material into the surrounding, which now holds 1,000 - 10,000 times the normal amount of radiation.
Rebuilding will take upwards of 5 years, the costs have been estimated at anywhere from $145 billion to $320 billion, and there is fear that leaked radiation is in the drinking water and will effect small children.
I'll leave you with several on-scene videos of the earthquake, incoming tsunami, and the efforts that are now going towards rebuilding (all short videos 1-3 minutes in length each). Extremely powerful stuff.