St. Basil's Cathedral in the Red Square is the most spectacular, incredible sight in Moscow mainly due to the multi - colored, onion shaped domes of its nine turrets. Each turret has a small chapel beneath it with altar, decorations, and lots of religious artifacts on display.
To enter the cathedral I had to stand in line and buy a ticket; it was worth it. The interior was beautifully decorated with frescoes, icons, bricks. I moved from one tiny room to another, taking pictures (without flash) , enjoying the richness of color, delicacy of shapes, and intricacy of details. I felt like I was in a fairytale castle, and I even managed to climb up the steps of the narrow staircase and have a look at the Red Square from the top.
To be able to 'absorb' all of the inside and outside beauty of this religious and architectural masterpiece, one has to visit it more than once. Definitely.
I was told that sometimes a male group of 4-5 singers, with angelic voices, perform in one of the chapels. It didn't happen while I was there. So, hopefully next time....
When I came back to the hotel, I suddenly became aware of the brick wall on the way to the room area; it seemed to have been inspired by the ones within the cathedral. I liked that.