Instagram has started rolling out a new search feature on its website. Search allows you to find people, places, and hashtags. Both geotags and hashtags will hyperlink to location or hashtag pages, and you can quickly find top posts for either your chosen location or tag.
Instagram's web search will eventually appear at the top of the web view, and is intended as a compliment to a recent set of design changes that made the web version of Instagram easier to use. It isn't available to all users just yet, and might take some time to roll out to all accounts.