(1) Background: Parkinson's disease (PD) is a neurodegenerative disorder characterized by gait and postural impairments. Recently, physical activity has emerged as a key strategy in PD management. This study aimed to evaluate the effectiveness of an innovative technology-assisted rehabilitation program in improving gait and reducing fall risk in older adults with PD. (2) Methods: Fifty-eight patients were randomly assigned to three groups: conventional rehabilitation (CG), or conventional therapy combined with technology-assisted rehabilitation using Tymo (TG) or Walker View (WG). The intervention consisted of 10 sessions over 5 weeks. Assessments were conducted at baseline (T0), post-intervention (T1), and at 6-month follow-up (FW). Outcomes included gait and balance performance, fear of falling, quality of life, activities of daily living, and physical function. (3) Results: The CG showed no significant improvements, with a decline in Barthel Index from T1 to FW. The WG demonstrated significant improvement in POMA Gait scores, while the TG improved both POMA Total and Balance scores at T1. Post-treatment, TG and WG outperformed CG in POMA outcomes; however, these differences were lost at follow-up. (4) Conclusions: Technology-assisted rehabilitation can improve gait and balance in older adults with PD, although sustained or repeated interventions may be necessary to maintain long-term benefits.