The Museum of Broken Relationships actually exists in Zagreb, Croatia. It started out similarly… Muzej prekinutih veza, Zagreb Croatia.
The song playing at the end of the film and over the credits is “Young and in Love” by Ingrid Michaelson from her 2019 album “Stranger Songs”, which was inspired by the Netflix series, Stranger Things (2016). Dacre Montgomery, who plays Nick, also plays Billy Hargrove in Stranger Things.
Movies referenced in The Broken Hearts Gallery: Grey Gardens (1975), Working Girl(opens in new tab) (1988), The Little Mermaid (1989), and The Notebook (2004).