At the monastery of Saint-Michel-au-Dôme-d'Or, a ceremony took place, as you can see in one of the photos. I know how to remain discreet and not be too intrusive, hence a single photo. Photos are dark, especially in St. Volodymyr's Cathedral, but it was night and I never use flash.

The entrance to some churches is chargeable. In addition, you may also have to pay a right to photograph, as was the case for Saint Volodymyr's Cathedral, unless you are not seen taking photos...

Despite the time spent, I could not see all the churches, there are so many.

Construction of Saint Sophia Cathedral started in 1037 and was completed 20 years later, covering a total area of 29ha (0.11mi2). After the Russian Revolution of 1917, and during the campaign of religious persecution in the 1920s, the government planned the destruction of the cathedral and its transformation into a park dedicated to the "Heroes of Perekop" (a victory of the Red Army during the war civilian). The cathedral was preserved thanks to the efforts of many scientists and historians.
The monastery of Saint-Michel-au-Dôme-d'Or dates from the beginning of the 12th century, and was built between 1108 and 1113. It was destroyed in the 1930s, during the Soviet period and rebuilt in the 1990s in Ukrainian Baroque style. It is located in the "Upper City", the historic core and administrative district of Kiev, and dominates the commercial part of the city, the Podol district. It is a model of Ukrainian Baroque style architecture. The monastery is under the jurisdiction of the Orthodox Church of Ukraine. It is dedicated to Saint Michael, patron saint of Kiev.
The Kyiv Caves Lavra or Kyiv-Pechersk Lavra1 is an important Ukrainian Orthodox monastery. It was founded in 1051. It is the place of residence of the primate of the Ukrainian Orthodox Church attached to the Patriarchate of Moscow.