From the header of the tour's website, you can read that the virtual tours you can see here are "world-class". What does it mean and is it just a catchy advertising slogan?
Just as, for example, articles published in global scientific journals are the litmus paper for researchers, the quality of the virtual tour is determined by references on relevant foreign websites. Most of the Tour's virtual tours are made with the help of the excellent software program "Pano2Vr". An article published on the blog of the website of the company that created this software program now introduces a virtual tour of Tallinn University to panoramic photography enthusiasts around the world. Along with our comments, the design of the virtual tour as well as the image quality are praised there.
See the article on the Pano2Vr website: “Pano2VR in the Wild — Virtual Tour of Tallinn University”