Oasis 21 is a striking mixed-use complex completed in 2002 in Nagoya's Higashi Ward. Designed by Taibai Corporation, this innovative structure seamlessly integrates a public park, transportation hub, and commercial facilities into one cohesive architectural statement. The building's distinctive design features a massive glass-enclosed water feature that dominates the space, creating an ethereal connection between urban functionality and natural elements. Its bold geometric forms and transparent materials exemplify early 2000s contemporary Japanese architecture, making it a notable landmark that demonstrates how modern design can successfully merge diverse urban functions while maintaining aesthetic appeal and public accessibility.