Example 1:

Ball Room [3]
This QTVR is of the ball room in the mansion. It does a good job of giving you a view of what it is like to be inside the mansion and what the room looks like. The stitching looks seamless but the QTVR is low resolution, even if you choose to view it in high resolution and the dimensions are very small which lowers the level of emersion considerably and makes it less interesting to look at due to the lack of detail.
Example 2:

Blackpool Tower [2]
This QTVR is the view from the top of Blackpool tower. It’s a cylindrical QTVR that shows 360 degrees around the tower so you can see the town and the beach. This has uses in tourism, because if you have never been to Blackpool this gives you a very good sweeping view of the area from a famous location. The disadvantage though is because of the high altitude the buildings are small, and the resolution/quality is low so you cannot zoom in without a lot of pixilation so it limits its use to just a broad view of the area.
Example 3:

A Master Bedroom from Kitsap Real Estate [4]
This is another good example of QTVR used for commercial purposes. Here it is being used to show the different rooms in a house for sale at Kitsap Real Estate. You can take a look around the room in 360 degrees and this is very useful to a prospective buyer because it gives them a sense of space and feeling for the location greater than what is portrayed in a photograph.
Sources:
[1] http://www.pbs.org/wgbh/amex/carnegie/sfeature/tour.html
[2] http://www.blackpool.com/bttop.html
[3] http://www.pbs.org/wgbh/amex/carnegie/sfeature/t_ballroom_hi.html
[4] http://www.bprowse.com/images/virtual_tours/rossiter/Master_bedroom.html