This is Samadhi (Hindu memorial) of Sarkhel Kanhoji Angre of Maratha Navy. Jogekar Naka, Alibaug, Maharashtra, India. Pin code 402201.
<a href="//commons.wikimedia.org/wiki/User:Pratishkhedekar" title="User:Pratishkhedekar">Pratish Khedekar</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>