Inclusion Criteria:  Self-identified African American, Age > 65 years old Reside or resided for >10 years in Portland's historically Black neighborhoods (to be familiar with Memory Markers about this area), Able to ambulate independently.  Meeting Cognition Criteria  Participants with MCI (Mild Cognitive Impairment) will meet criteria consistent with the criteria outlined by the NIA-Alzheimer's Association workgroup Participants without cognitive impairment will have a Montreal Cognitive Assessment (MoCA) score > 24 (and not meet MCI criteria). Participants' cognitive function should allow them to get to and from walk locations independently or with minimal assistance. Cognitive function allows independent (or minimally assisted) travel to and from walk locations In-home reliable broadband internet (for weekly online surveys). Ability to read, speak, and understand English  Exclusion Criteria:  Self-reported or clinically diagnosed dementia Significant disease of the central nervous system Severely depressed (CES-D score > 16), significantly symptomatic psychiatric disorder Advanced cardiovascular disease that would make walking difficult, including history of congestive heart failure Unstable insulin-dependent diabetes mellitus, received diagnosis Type 1 Diabetes, started insulin within past 3 months, hospitalized for hypoglycemia within past 6 months.