A Boston Duck Tours DUKW amphibious vehivle on one of the three locks that pass through the Charles River Damn, as seen from the Charles River Damn Bridge in Boston, Massachusetts.
<a href="//commons.wikimedia.org/wiki/User:Beyond_My_Ken" title="User:Beyond My Ken">Beyond My Ken</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>