A "disaster-prevention tour guide" led dozens of people earlier this month along a 10-meter-high seawall overlooking the Taro district in Miyako, Iwate Prefecture, where monster tsunami wreaked havoc in March 2011.

"This seawall was built not to prevent the tsunami, but to give people more time to escape," Junko Sasaki, 53, said.

The district made a fresh start on Nov. 22 by holding a "town opening" ceremony after erecting about 450 new dwellings.