Abstract
The huge tsunami caused by large-scale earthquake like East Japan Earthquake usually happens once in several hundred years. As the damage by the tsunami was vast, Town planning considering to endure most unusual large scale tsunami is inevitable. As almost all the concrete buildings were not destroyed by the earthquake and the structure of concrete buildings remained after tsunami attack, the best way is to build tall buildings as many as possible in the seashore lowland area. Tall buildings may be the evacuation points and protect household goods from tsunami. Re-building along this policy is very difficult, but it will save people in far-off future from miserable tragedy.
