Most citizens of Bulgaria are at least nominally members of the Bulgarian Orthodox Church founded in 870 AD (autocephalous since 927). The Bulgarian Orthodox Church is the independent national church of Bulgaria like the other national branches of Eastern Orthodoxy and is considered an inseparable element of Bulgarian national consciousness. The church has been abolished, or rather reduced to a subordinate position within the Greek Orthodox Church, twice during the periods of Byzantine (1018-1185) and Ottoman (1396-1878) domination but has been revived every time as a symbol of Bulgarian statehood. In 2001, the Bulgarian Orthodox Church had a total of 6,552,000 members in Bulgaria (82.6% of the population). However many younger people raised during the 45 years of communist rule are not religious even though they formally may be members of the church.
The Alexander Nevsky Cathedral in Sofia is one of the biggest Orthodox churches in Europe.

The Alexander Nevsky Cathedral in Sofia is one of the biggest Orthodox churches in Europe.

Veliki Preslav, The Patriarchal complex