The Temperate House in the Royal Botanical Gardens, Kew, London. Taken as an 8 segment panorama in portrait format with a Canon 5D and 24-105mm f/4L IS lens.
<a href="//commons.wikimedia.org/wiki/User:Diliff" title="User:Diliff">Diliff</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>