Stamp Illustration in doodle style

A square 1:1 format digital illustration of the (YOUR_CITY), showing its most iconic monument in a bold black-and-white doodle style with thick, fluid lines and playful abstract shapes. The background features hand-drawn patterns and a smooth horizontal gradient inspired by the national flag colors of the country of this city. A bold frame of irregular zig-zag or perforation-like edges surrounds the illustration, mimicking the outline of a postage stamp. The name of the city appears in large hand-drawn, doodle-style letters, fully integrated into the design. The overall style is high-contrast, energetic, and modern, combining black doodle linework with a subtle colorful gradient.