The churches are open daily and taking photos is allowed as long as you don’t disturb the religious activities. Sundays are very crowded. If you’re interested in their architecture and interior paintings, it’s better to choose another day for a visit.
Bucharest has many old churches some of them of major historical importance. From different centuries and built in different architectural styles, these churches have state of the art interior paintings and a rich history to recommend them as key cultural attractions.