The Church of St. Petka of the Saddlers, dating back to the 15th century during the reign of the Ottoman Empire, was created with donations from the Saddlers guilds of Sofia, hence the name. The church was dedicated to the martyr Petka Ikoniyska. It was built on top of the ruins of an 11th century Roman temple. During this time, construction of churches was allowed, with the restriction that their height was not allowed to exceed the height of a soldier on horseback. Thus, many churches were partially constructed underground. This is a great example of one of these structures. There are some visible traces of antique frescoes in the semicircular arches (part of a three stage of a mural painted in the 15th, 17th, and 19th centuries. There is a theory suggesting that the church is the resting place of Vasil Levski, a national hero and symbol of resistance, who was arrested and hung in Sofia during 1873. A vestige of the past, miraculously preserved through time among the hulking communist buildings, this church is a great example of the rich and diverse heritage of the capital.