The <figcaption> element is used to provide a caption to an image. It is an optional tag and can appear before or after the content within the <figure> tag. The <figcaption> element is used with <figure> element and it can be placed as the first or last child of the <figure> element.

<figure>    
  <img src="htmlpages/images/tajmahal.jpg" alt="Taj Mahal"/>    
<figcaption>Fig.1.1 - A front view of the great Taj Mahal in Agra.</figcaption>    
</figure>