The Bath of Fisilti (or Fisilti Hamami) are located in the southern part of the city, next to the banks of River Erythropotamos. It is a monument of unique value, as it"s probably the earliest surviving Ottoman bath in southeastern Europe. The baths are divided into three parts, with the changing rooms to be housed by an impressive perforated dome, in a warm and cozy apartment section. It is the work of Orouts Pasha dating from the late 14th century and owes its name to the peculiar construction that allows the good transmission of sound from one space to another. Currently they are not visitable. They can be visited only upon request. The entrance is free for students and teachers.