Add search filters

I believe one way to make the application better is improving a search functionality.

When I search my area I have a lot of different results for the same view point (e.g. bridge, river and buildings)

Sometimes I want to find something particular, for example, best spot to see sunset.

I propose to add filters by categories (sunset, architecture, nature, etc.). Another Idea is searching by a similar picture, when you want to make a similar photo of your favorite photographer.