I love Zhangye! However, to include them would be like missing out on better non-inscribed places like Vinicunca (much better than here!), Painted Hills and Hornocal. I probably missed something but these are big examples of the colorful rocks in the ground turned sideways and thus showing up at the surface.

It's been almost 10 years since my visit. I remember flying into Zhangye, grabbing a taxi, then stopping at the colorful hills. The ticket price includes the mandatory shuttle bus because it's just too far to walk from the main entrance. There are also a few stops so you get on and off to get around. Finally, you also drive past some old filming locations which may be gone or abandoned by now.

When you get to a stop you can hike up the small path and view the colorful rocks higher up. With good sunlight it makes for marvelous views. You finish up and see another sight. Overall it will take 2-3 hours due to the long transfers involved. Totally worth it though.

The only problem is: it's better in Peru... it's...the same? It's also not the only place in the world that has this. Either make a worldwide entry for these kind of sites or don't bother with your single entry. It's a shame because the site is a must view but not world heritage on its own.