We rely frequently on guides.  Some point arrows to keep us on track.  Others help us navigate terrain where no trails exist.  The bigger the unknown in an adventure the greater the likelihood we consult local experts for specific insights.  Locating baggage claim after disembarking at an airport does not typically require lots of guidance.  Finding a guide uniquely positioned to offer an insiders perspective of these remarkable places requires a more highly individualized talent:
Strahov Monastery library in Prague

  Uluru, Northern Territory Australia

Cinque Terre, Italy