Spherical panoramas and virtual tours

VR tour with lot of panoramas. Size: ~250Mb
Complex virtual tour with plenty of interactive control elements.
Simple virtual tour with 2 panoramas. Size: ~50Mb
Simple panorama with basic control menu. Resolution: 10000×5000. Size: ~30Mb
Gigapixel panorama. More than 100 photos stitched into one image. Size: ~250Mb.
One storey real estate with 3 panoramas and floor plan.