Discussion Best of Bulgaria 2022

I am scheduled and set to go on the BOB tour commencing on September 4, 2022. Cannot believe it's finally happening! I've heard so much about Bulgaria's rich history, stunning landscapes, and vibrant culture. For those who've been, what were your highlights? Any must-see spots or hidden gems that aren't on the typical tourist radar? Also, any tips for making the most out of the trip would be greatly appreciated. Looking forward to hearing your experiences and advice!