About Us. As Kansas City’s Botanical Garden, Powell Gardens plays a vital role in the community as a space for release. rejuvenation, and the celebration of the fleeting nature of nature itself. Visitors enjoy themed display gardens. a three-mile nature trail, seasonal festivals, rotating exhibitions, and exceptional architecture. Established in. 1988, Powell Gardens is a public garden, maintaining 970 acres of lush, rolling hills and windswept m...