Head south from Albena to spend the afternoon in the city of Varna on this half-day guided tour. You'll kick things off at the Archaeological Museum, heading straight to the first floor to see the world's oldest processed gold – it's over 6,000 years old. While the gold is undeniably the star attraction, take your time through the rest of the museum, where exhibits cover everything from the Stone Age and Ancient Greece to Medieval Bulgarian history.
Next, you'll enjoy a short visit inside one of the city's defining landmarks and the spiritual heart of Varna – its cathedral. The Cathedral of the Assumption of the Holy Mother of God gives you a glimpse into Orthodox Christianity. The building was inspired by Russian architecture, so look up to see the huge chandeliers, vibrant frescoes and generous gold detailing.
Afterwards, take your time wandering through Varna's relaxed city centre. You'll have 90 minutes of free time to soak up the wide, elegant boulevards of the late 19th-century. Head to the pedestrian zone for a leisurely stroll, where you can grab a coffee at one of the many cafes and do some people-watching before returning to Albena.