"Information about the map and the panoramas"

You can click in an empty area of this map to search for the nearest spherical panorama in a certain radius of 150meters. If after the click, a panorama is found then it will appear in the window on the left plus a respective Pin icon and a Google Street view icon will appear in the central map too

You can drag the Google Street View icon to a new position or click in a new area to search another panorama.

Finally by pressing the recenter icon you can recenter the main map to the selected Google street panorama.

Google Street View panoramas
No street panorama was found near this location