Site & Design
Site
The site is one and a half blocks in size, close to the Knoxville Civic Center and Coliseum. See a map from the 2019 presentation made to the city of Knoxville by representatives of the Clayton Family Foundation and BarberMcMurry Architects (note that use of the map does not imply any endorsement by either of these groups of any plan for an aquarium at the site or any other ideas on this webpage).
There are three essentially adjacent parking garages. The area is used to handling sudden influxes of traffic given the proximity to the Knoxville Civic Auditorium and Coliseum, which hosts everything from Disney on Ice to ballet to concerts. It is close to interstates 40 and 75. See map below:
Travel
Here is a map of all places within an hour by car of the site, courtesy of https://radiusmapper.com:
And a thirty minute walk from the same site:
Design
One would want to have real architects involved in any design process. Just for quick inspiration, I used Google Gemini to create a few potential ideas. [My hope is that the benefit of popularizing the Knoxville Aquarium idea could offset the environmental and ethical costs of using an AI to generate these images.]