The Margravial Opera House in Bayreuth reopened in April 2018 after six years of restoration. A business trip gave me the opportunity for a detour to visit the Opera House a second time. It was the second day after the reopening, but when I arrived only four other people were waiting for the next time slot. Things have changed a bit, there are no guided tours. Every 45 minutes a short multimedia show starts (a screen is lowered on the stage), then you can visit the interior on your own for the rest of the time slot. But there is no access to the boxes. Taking photos is possible, there is no guide, "we can not prevent it" was the answer to my question on photo permission.
I was really delighted, even more than at the first visit. The restorers have done a good job: the interior looks brighter, darker shades of an earlier restoration and oily insect repellents have been removed. The aim was conservation, not a reconstruction, traces of usage are visible, you can see that it is old. But that only increases the charm of the theatre, it's really a little gem.
There will also be opera performances again (stage technology, fire protection and air conditioning have also been modernized), but for conservational reasons only a few events in the summer. Would be a reason for a third visit.
Bayreuth is a bit off the beaten track, but a visit is worthwhile and the WHS can be properly visited in less than an hour.