The Western Promenade is a historic promenade, an 18.1-acre public park and recreation area in the West End neighborhood of Portland, Maine. Developed between 1836 and the early 20th century, it is one Portland's oldest preserved spaces, with landscaping by the Olmsted Brothers, who included it in their master plan for the city's parks. The promenade w…The Western Promenade is a historic promenade, an 18.1-acre public park and recreation area in the West End neighborhood of Portland, Maine. Developed between 1836 and the early 20th century, it is one Portland's oldest preserved spaces, with landscaping by the Olmsted Brothers, who included it in their master plan for the city's parks. The promenade was listed on the National Register of Historic Places in 1989.