
The oldest and most sacred cathedral of East Slavic civilization from the era of Kyivan Rus, founded in the 11th century under Grand Prince Yaroslav the Wise and restored in the Ukrainian Baroque style with 13 gilded domes, a 76-meter bell tower, 260 square meters of original mosaics and 3,000 square meters of 11th-century frescoes.
Photo: Rbrechko, CC BY-SA 4.0, Wikimedia Commons