From the Stone Age till now, places all around the world have opened gates into spiritual realms. Ignoring the spiritual dimension brings heavy loss. Tony Grey, historian, businessman and traveller, finds seven places. At Assisi, Delphi, in mountainous Bhutan, the Northern Territory and Middle East. Their religious and historical differences--and what they have in common--open up understanding of what we are and how to face the 21st century with more than material resources.