This excursion offers architecture enthusiasts the opportunity to peek behind the doors of the otherwise closed Tallinn City Hall. Linnahall was one of the most exciting filming locations in Tallinn for Christopher Nolan's 2020 film Tenet.

Linnahall is part of a building complex built to host the sailing regatta of the XXII Moscow Olympic Games in Tallinn in 1980. The building was designed by Raine Karp, Riina Altmäe, and Ülo Sirbi in 1976. It is one of Tallinn's most prominent examples of Estonian Soviet-era architecture.

The excursion can be organized in Estonian, Russian, or English.