Memory Lane Meaning

Example : 1954, Peter De Vries, The Tunnel of Love, Little, Brown, & Co., p. 25:  "How about a stroll down Memory Lane. Remember this?" He thrust a picture at me.2001, Margaret Maron, Corpus Christmas, ISBN 9780446677660, p. 255:  Sigrid took a bittersweet trip down memory lane when Anne opened the carton of ornaments and lifted out a crumpled tinsel star. All at once she was three years old again and her father was holding her up in his strong arms to place that same star on the very top of their Christmas tree.