Architectural Letter Stack Tower Poster

Explore architectural letter stack tower poster that reimagines typography as a structural element. The exact phrase LETTER TOWER appears as a vertical stack of bold three-dimensional letters, each one acting as a building block in a towering structure. The letters at the bottom are large and weighty, supporting the increasingly smaller letters above, creating a sense of architectural scale and engineering precision. Treat the words as the hero image: exact spelling, intentional kerning, clean letter construction, strong contrast, and production-ready typographic detail. Frame the composition in a tall vertical format with the letter tower centered and a clean architectural grid background. Use dramatic directional lighting from above that casts deep shadows from each letter, emphasizing the structural quality and three-dimensional depth. Render only the requested phrase with exact spelling and clean kerning; do not add extra words, logos, signatures, or malformed letters.