Create a preliminary design and layout for a poster on an A4 sheet of paper. ​The poster design must encompass specific elements to effectively convey its message. Start by prominently displaying the architect's name as the title, complemented by an apt subtitle.

Additionally, incorporate a visual element by featuring a portrait or a representative image of the architect. To highlight their architectural prowess, showcase three pivotal buildings they've designed. Furthermore, accompany these visuals with a concise yet informative description that offers insights into the architect's life, intriguing anecdotes, or memorable quotes, spanning a length of 5 to 10 lines.