Digital Dunhuang
Not a promotional virtual tour, but the official digital museum — high-resolution murals, 30 virtual caves, and a research library for Dunhuang studies.
The Dunhuang Academy's official digitisation project, with an English 'Digital Library Cave' virtual tour of 1,000-year-old Mogao Grottoes murals.
Digital Dunhuang IS an official digital museum (a permanent shared cultural resource), not a marketing virtual tour.