A nice video proposed by MySwitzerland, with window the propotion of ecotourism in Switzerland:
MySwitzerland offers a selection of sites and activities described as "sustainable": of soft mobility, national parks, public transport, and other arguments more or less to brag about the holiday marketing, respectful of our environment.
Except that, for the Japanese who offers a holiday in Switzerland with a few thousand miles by plane, carbon balance collapses not bad, sustainable activities or no on-site…
But the video is beautiful.