In South Australia , a whole town lives underground to escape the heat . Think Seattle 's nice ? Mary King 's Close , 2 Warriston 's Close , The Royal Mile , Edinburgh , Scotland ; +44 845 070 6244 Comment: The water is heated by radioactive decay in the core of the earth and then released into the atmosphere as steam or hot air. Drainage systems sound dull but Tokyo 's is an engineering marvel .
In South Australia , a whole town lives underground to escape the heat . Think Seattle 's nice ? Comment: The water is heated by radioactive decay in the core of the earth and then released into the atmosphere as steam or hot air. Drainage systems sound dull but Tokyo 's is an engineering marvel .