INDONESIA
Borobudur
The largest Buddhist temple there is
3 ways to do it, all bookable here
In Central Java rather than Bali, an hour from Yogyakarta, and worth the flight. Built in the ninth century and then abandoned for centuries under volcanic ash, it carries 2,672 relief panels and 504 Buddha statues arranged as a path you walk clockwise and upward. Climbing to the upper terraces now needs a timed ticket and a guide, and the number allowed up is capped, so that part has to be booked rather than decided on the day. Sunrise slots are the ones people fight over.