Free Walking Sightseeing Tour #3 in Sofia, Bulgaria

The National Polytechnical Museum is a science museum located in Sofia, Bulgaria.

Wikipedia: National Polytechnical Museum (EN), Website

"St. Nicholas of Sofia" is an Orthodox Church of the Sofia Diocese of the Bulgarian Orthodox Church, located in the center of the capital Sofia.

Wikipedia: Свети Николай Софийски (София) (BG), Website

Holy Trinity, known as the Romanian Church, is a church of the Romanian Orthodox Church in the Bulgarian capital Sofia.

Wikipedia: Света Троица (румънска църква в София) (BG)

The Sofia Synagogue is the largest synagogue in Southeastern Europe, one of two functioning in Bulgaria and the third-largest in Europe.

Wikipedia: Sofia Synagogue (EN)

Banya Bashi Mosque is a mosque in Sofia, Bulgaria.

Wikipedia: Banya Bashi Mosque (EN)

The Regional Museum of History – Sofia is housed in the building of the former Central Mineral Bath in Sofia.

Wikipedia: Регионален исторически музей (София) (BG), Website

The Central Mineral Baths is a landmark in the city center of Sofia, the capital of Bulgaria, a city known for the mineral springs in the area. It was built in the early 20th century near the former Turkish bath and was used as the city's public baths until 1986.

Wikipedia: Sofia Central Mineral Baths (EN)

The Church of St Paraskeva is a Bulgarian Orthodox church in Sofia, the capital of Bulgaria. The church, dedicated to Saint Paraskeva, is located on 58 Georgi Rakovski Street in the centre of the city. It is the third-largest church in Sofia.

Wikipedia: Church of St Paraskeva, Sofia (EN)