This research investigates the design and implementation of modular float glass systems that prioritize reusability and sustainability. The project addresses a significant gap in architectural practices involving glass by developing modular, demountable glass systems that can be disassembled and reused, challenging the traditional, single- use paradigm of glass in construction. Through a comprehensive review of existing glass systems and the exploration of novel connection designs, this master thesis aims to create a modular glass system as pavilion that exemplifies sustainability in architecture. The key focus is on innovating connections that allow for easy assembly and disassembly without compromising structural integrity or aesthetic values. Preliminary findings suggest this specific interlocking connection designs can enhance the life cycle and functionality of glass structures, thereby reducing their environmental impact.