Waseda University Aqua Arena, located in Tokorozawa, Saitama Prefecture, is a remarkable indoor sports facility completed in 1990. Designed by renowned architect Ikehara Yoshiro, this facility exemplifies thoughtful sports architecture that seamlessly integrates functional design with aesthetic considerations. The building serves as a multipurpose venue for the university, accommodating various athletic activities and events. Its distinctive architectural approach reflects the design philosophy of the late 20th century, offering architecture enthusiasts valuable insights into sports facility design and structural innovation during this period.