The <a href="https://en.wikipedia.org/wiki/Kuskovo" class="extiw" title="w:Kuskovo">Kuskovo Estate</a>. <br><a href="//commons.wikimedia.org/wiki/Category:Grotto_in_Kuskovo" title="Category:Grotto in Kuskovo">The Grotto Pavilion</a> (the Eastern facade). Architect Fiodor Argunov (1732—1768(?)). 1755—1761.
<a href="//commons.wikimedia.org/wiki/User:Dmitry_Ivanov" title="User:Dmitry Ivanov">Dmitry Ivanov</a>.
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<span class="int-own-work" lang="en">Own work</span>