2 February 2016 Last updated at 07:24 GMT
Clearing up and rebuilding has been a big task and children living there are given special classes so they know what to do if another earthquake hits.
Leah travelled to Ishinomaki Elementary School to take part in a safety class.
On 11 March 2011, an earthquake, which started under the sea, shook the north-east of the country.
The earthquake was measured at force 9.0 magnitude, high enough to trigger a huge wave called a tsunami.
The wave crashed on to the shore destroying huge areas. Sadly, thousands of people lost their lives.
A nuclear power plant was also damaged and began leaking radiation. triggering the worlds worst nuclear disaster for 25 years.
It is nearly five years since Japan was hit by one of the most powerful earthquakes ever.