H.R. times Wally as he runs around the lake and finds Wally is faster than Barry was at this stage of his training in episode 3x09 "The Present".
Source: What's Filming — Twitter
Park where Juliet get fake married to Rajesh Singh as part of a sting operation in episode 4x06 "Bollywood Homicide".
Bench that Emily Mallum frequently visits in episode 4x10 "Forced Perspective".