President Iliana Iotova will open the international conference "The Black Sea and Eastern Europe: Key to Europe's Security" at 10:00 at the Grand Hotel Sofia, the president's press office said.

The forum is under the president's patronage. It is organised by the European League for Economic Cooperation and the Bulgarian Academy of Sciences, and the league is using it to mark its 80th anniversary. Participants include representatives of institutions, diplomats, scientists, technology specialists and entrepreneurs.

At 17:00, Iotova will visit the exhibition hall of the State Agency "Archives", which is marking 75 years since its founding. The anniversary edition "Bulgarian Archives. Documents and People" and the exhibition "Finds of Memory. Unexpected Archive Discoveries" will be presented there. A special postage stamp will also be validated to mark the anniversary.

In the evening, from 19:00, the president will attend the 16th annual "Wonders of Bulgaria" cultural heritage awards for 2026 at the Ivan Vazov National Theatre. Iotova will give a speech and present plaques to the winners in the "Wonder of Bulgaria" category for the biggest archaeological discovery of 2026.

The awards are organised by the Cultural Heritage Society, the Bulgarian representative of the European heritage protection organisation Europa Nostra, under the president's patronage. The ceremony's show is "The Bulgarian Code: The Embroidery".