Self-guided Sightseeing Tour #5 in Thessaloniki Municipal Unit, Greece

The Heptapyrgion, modern Eptapyrgio, also popularly known by its Ottoman Turkish name Yedi Kule, is a Byzantine and Ottoman-era fortress situated on the north-eastern corner of the Acropolis of Thessaloniki in Greece. Despite its name, which in both languages means "Fortress of Seven Towers", it features ten, and was probably named after the Yedikule Fortress in Constantinople. It served as the major redoubt of the city's acropolis, as well as the seat of its garrison commander in Ottoman times, until the late 19th century. It was then converted to a prison, which remained open until 1989. References to the infamous Yedi Kule prison abound in the Greek rebetika songs. Restoration and archaeological work began in the 1970s and continues to this day.

Wikipedia: Heptapyrgion (Thessaloniki) (EN)

Vlatades Monastery or Vlatadon Monastery is a monastery in Ano Poli, Thessaloniki, Greece. Built in the 14th century during the late era of the Byzantine Empire, it is a UNESCO World Heritage Site along with 14 other Paleochristian and Byzantine monuments of Thessaloniki because of its Byzantine architecture and importance of Thessaloniki during early and medieval Christianity.

Wikipedia: Vlatades Monastery (EN)

The Church of Hosios David is a late 5th-century church in Thessaloniki, Greece. During Byzantine times, it functioned as the katholikon of the Latomos Monastery, and was adorned with rich mosaic and fresco decoration, which was renewed in the 12th–14th centuries. The church is dedicated to David the Dendrite. Many surviving elements of the Byzantine decoration are of high artistic quality, especially the 5th-century apse mosaic the Icon of Christ of Latomos. Under Ottoman rule, the building was converted into a mosque, until it was reconsecrated as a Greek Orthodox church in 1921, thus receiving its present name. In 1988, this monument was included among the Paleochristian and Byzantine monuments of Thessaloniki on the list of World Heritage Sites by UNESCO.

Wikipedia: Church of Hosios David (EN)

The Church of Prophet Elijah is a 14th-century church in Thessaloniki, Greece, and a UNESCO World Heritage Site.

Wikipedia: Church of Prophet Elijah (Thessaloniki) (EN)

The Church of Saint Demetrius, or Hagios Demetrios, is the main sanctuary dedicated to Saint Demetrius, the patron saint of Thessaloniki, dating from a time when it was the second largest city of the Byzantine Empire. Since 1988, it has been on the UNESCO World Heritage List as a part of the site Paleochristian and Byzantine monuments of Thessaloniki.

Wikipedia: Hagios Demetrios (EN)

The Roman Forum of Thessaloniki is the ancient Roman-era forum of the city, located at the upper side of Aristotelous Square.

Wikipedia: Roman Forum (Thessaloniki) (EN)

The Monastir Synagogue is a historic synagogue of the once vibrant Jewish community in Thessaloniki.

Wikipedia: Monastir Synagogue (Thessaloniki) (EN)

The Church of Saint Catherine is a late Byzantine church in the northwestern corner of the Ano Poli, Thessaloniki, Greece.

Wikipedia: Church of Saint Catherine, Thessaloniki (EN)