The examples above are complex realizations, as production as well a structure, differently from simple panoramic images Google Street View. that use a technology mix to drive user with visual content and multimedia (audio, video, text, interactions, etc.).
Even if structured starting from similar elements (hot-spots, areas, navigation arrows, menus) solution variety possible is wide and consent high grade of users engagement and interactivity .
We have analytics that show more than 4 minuts on page time and low frequency, with benefits for SEO score.