A hall of the <a href="https://en.wikipedia.org/wiki/Central_Air_Force_Museum" class="extiw" title="w:Central Air Force Museum">Central Air Force Museum</a> in Monino, Russia. <br>The exhibits: 
<ul><li>The ceiling-mounted aircraft is <i><a href="//commons.wikimedia.org/wiki/Category:Letatlin" title="Category:Letatlin">Letatlin No. 3</a></i>, the human-powered ornithopter created in 1929—1932 by <a href="https://en.wikipedia.org/wiki/Vladimir_Tatlin" class="extiw" title="w:Vladimir Tatlin">Vladimir Tatlin</a>.</li>
<li>The exhibits at the wall, from right to left: the basket of a tethered spherical balloon (Russia, the beginning of 20th c.), the model of the dirigible of <a href="https://en.wikipedia.org/wiki/Konstantin_Tsiolkovsky" class="extiw" title="w:Konstantin Tsiolkovsky">Konstantin Tsiolkovsky</a>, the gasoline engine constructed by <a href="https://en.wikipedia.org/wiki/Ognjeslav_Kostovi%C4%87_Stepanovi%C4%87" class="extiw" title="w:Ognjeslav Kostović Stepanović">Ognjeslav Kostović</a> (Russia, 1883).</li>
<li>The biplane in the background is the French aircraft <i>Farman IV</i> (1910–1916).</li></ul>
<a href="//commons.wikimedia.org/wiki/User:Dmitry_Ivanov" title="User:Dmitry Ivanov">Dmitry Ivanov</a>.
<span class="int-own-work" lang="en">Own work</span>