Spherical or Cubical Panoramas allow the viewer to look in any direction, as if one were standing in the center of a sphere (cube)
The viewers are free to download and install.

Just click and hold your mouse pointer inside the virtual tour, then move the mouse around (up, down, to the right and left) to view the panoramas thoroughly. You will now be able to move the view wherever you want to look. The panorama downloads in tiles which can be of different sizes. Sometimes you see a blurry preview first, but you can start viewing and panning it as soon as you see the first parts.

Zoom in
Choose the Options button (Mac) or Shift button (Win)

Zoom out
Choose the Control Button (Mac/Win)