Conference venue

The 37th TSOP Annual Meeting was planned to be held in the halls of Sofia University “St. Kliment Ohridski”.

Sofia University, photo: Internet

Sofia University “St. Kliment Ohridski” is the first Bulgarian high academic school establishment. Its history is an embodiment and a continuation of the century long cultural and educational tradition of the Bulgarian nation. Sofia University has been a center of research and education since 1888 and has become one of the most highly reputable centers of science on the Balkans, a full-fledged university of the European type. Today Sofia University "St. Kliment Ohridski" is the biggest and most prestigious scientific hub in the country. There are 16 faculties with 119 special subjects being taught.

Sofia University “St. Kliment Ohridski” is located in the heart of Sofia and has one of the oldest and most beautiful buildings in Sofia. Its edifice was built with the financial aid of two donors – the brothers Evlogiy and Hristo Georgiev and is one of the architectural landmarks of the city of Sofia. Today it covers a built-up area of 36 000 sq. m., with 324 premises, 65 of them being lecture theaters with 6 000 seats.

The AULA Ceremonial Hall will be the main venue of the TSOP 2021 meeting.


The staircase to the Aula, photo: Internet

Aula, photo: Internet


St. George Rotunda, photo: Internet

Situated among vast parkland, Sofia, the capital and largest city of Bulgaria, lies at the foot of the Vitosha Mountain. With a history that stretches over seven millennia, ruin-rich Sofia is one of Europe's oldest cities. The National Historical Museum is one of Eastern Europe's most extensive and the Boyana church nearby is a UNESCO monument.
Traversed by a modern metro, the city of Sofia is an intriguing mix of wide and graceful Parisian-style boulevards and communist-era architecture.
Enjoy a stroll down Sofia’s chic pedestrianised Vitosha Street full of charming boutiques, tempting cafes, and cosy bistros. Do not miss the stunning gold-domed Alexander Nevski memorial church and the unique collection of early Roman mosaics in the crypt of St. Sofia church.

Alexander Nevski Cathedral, photo: Internet

Ivan Vazov National Theatre, photo: Internet


Rila Monastery, photo: Internet

Bulgaria is a part of the Balkan Peninsula in South Eastern Europe. The state of Bulgaria was founded in 681 AD and has a long and impressive history. Since January 2007 Bulgaria is a member of the European Union.
Here are some facts about Bulgaria:

  • The oldest crafted gold in the history of mankind is found here
  • Of the 300 cultural and natural sites in the UNESCO List of World Heritage, nine are in Bulgaria.
  • Bulgaria is the country of yoghourt – the food of the centenarians.
  • The world’s perfume and cosmetics industry could not do without the Bulgarian attar of roses – the Bulgarian oleaginous rose yields 80% of the world’s production.
  • Small Bulgaria is one of the world’s largest wine producers together with France, Spain, Italy and Greece.

Bulgaria is a beautiful mountainous country, with tourism opportunities being one of its biggest assets. Bulgaria possesses beautiful landscapes and beaches. The Black Sea Coast on its East border is famous for its fine sanded beaches, and perfect temperatures of water and air.

Triavna Town, photo: Internet

Women gathering rose petals and the Panagyurishte Gold treasure, photos: Internet