Roman ampitheater in the old Tiber port town of Ostia Antica, Italy.  View of curved seats, end of stage, and Stone Pine <i><a href="//commons.wikimedia.org/wiki/Pinus_pinea" title="Pinus pinea">Pinus pinea</a></i> trees.
Dcrjsr
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>