The Tsunami Height Indicator...

This evidently is one of a few Tsunami height indicators local bureaucrats have put in place in case one comes ashore in this delightful backwater. You get the idea. The locals bet on which section of the monster erection is going to remain dry and the winner doesn't have to pay rates for a year. The winner's house has probably disappeared anyway.
But for now, some of the local girls
are using it for pole dancing...