Seuthopolis

[3] Its ruins are now located at the bottom of the Koprinka Reservoir near Kazanlak, Stara Zagora Province, in central Bulgaria.

The cemetery of Seuthopolis included a number of brick tholos tombs, some covered by tumuli, in which the upper-class were interred, sometimes along with their horses.

The ruins of the city were discovered and excavated in 1948[8] by Bulgarian archeologists during the construction of the Georgi Dimitrov (later renamed Koprinka) Reservoir.

In 2005, Bulgarian architect Zheko Tilev proposed a project to uncover, preserve and reconstruct the city of Seuthopolis (the best-preserved Thracian city in Bulgaria) by means of a dam wall surrounding the ruins in the middle of the dam, enabling the site's inscription as a UNESCO World Heritage Site and making it a tourist destination of world importance.

[citation needed] The project was donated by the architect to Kazanlak municipality and funds are being raised to begin construction.