Although a bit squashed by all the post-war buildings around it, the Church of the Trinity in Nikitniki, built in the first half of the 17C, is a little gem that is all refinement and curves. Its typically Muscovite architecture is strikingly polychrome: the white underscoring its windows and kokoshniki afford a remarkable contrast to the red walls and bottle-green onion domes topped by gilded crosses. Be sure to go inside to admire the frescoes by Simon Ushakov and Iosif Vladimirov.