Marvel as Veliko Târnovo's medieval skyline is bathed in multicoloured light during the Sound and Light Show. This 40-minute audiovisual display uses choral music and flashes of light in a homage to the rise and fall of the Second Bulgarian Empire.
Historical insights are few, but it's an undeniably impressive spectacle: Tsarevets Hill is awash in crimson and green, while strings, cymbal clashes and traditional song swell to a crescendo.
The prime vantage point is ticketed and starting time is anywhere from 8pm to 9.30pm, depending on the time of year, so check the website or ask at the tourist information centre. Otherwise, simply listen for the bells and look for the laser beams.