Waiki­ki is world-famous for its waves – but on one sec­tion of glo­ri­ous Hon­olu­lu beach, a break­wa­ter known as the ‘Waiki­ki Wall’ shel­ters swim­mers from the surf for almost a quar­ter of a mile. The result: a man­made trop­i­cal lagoon known local­ly as ‘the Ponds’, with the high-rise sky­line adding extra glam­our.