```html
The Congress Center Avditorij Portorož, with its long-standing tradition, is more than just a venue. At the Avditorij, you experience the harmony of an extraordinary atmosphere and charm. The Tartini Theatre (1909–1910) is a beautiful example of a fin-de-siècle Gesamtkunstwerk, blending historicism and Art Nouveau. The Avditorij, together with the Tartini Theatre, meets all the requirements for organizing conferences, symposiums, seminars, corporate presentations, celebrations, concerts, and receptions.
The Avditorij includes a main hall with 500 seats, four meeting rooms accommodating between 20 and 100 participants, an amphitheater – a summer theater with 1,796 seats, the Tartini Theatre with 300 seats, and the Cloister of the Minorite Monastery in Piran (chamber concerts) with 250 seats. The foyer of the Avditorij is designed as a multifunctional event space for independent or accompanying exhibitions, participant receptions, and social gatherings. The halls are equipped with state-of-the-art audiovisual technology and booths for simultaneous interpretation.
```
