Here is some of the font experiments for my chosen cities.

I wanted to keep Helsinki light, sleek, simple and modern. Colour palette that I had in mind could be light blue and white, also pale grey.

Moscow is bold and something quite masculine looking, also a has a cyrillic look to it. Something rigid and angular.  Colour palette could be red, dark/ pale grey, white and black.

San Francisco bit rounded and light and fun looking. Colour palette could be burnt orange and grey, maybe some white.