The top is the original icon. Very simple yet, attractive. Looks like newspaper icon. The base is simple, rounded rectangle with some subtle shaddow. Then, we include the city picture into the guide. Next, put the logo.
On Sketch, how did I make the logo. Create an oval then cut the middle by having a rectangle. The way Sketch works is by using edit the shape then cut the unwanted selection. Prior to that we have to add some anchor points inside the oval.
Final result. Look at the 'city picture', it looks simple rectangulars with some shades.