"Herz Der Sonne" means "Heart of the Sun" in German.
The story is similar to the classic film 'It's a Mad, Mad, Mad, Mad World' which was also about several people seeking a treasure.
Varian gets a brand new outfit in this episode.
The hot air balloons reappeared from "Rapunzel's Return.
The Throne Room is repaired after the damage caused by the fight with the Separatists of Saporia in "Rapunzel's Return".
Ruddiger trying to trap Maximus, only for them to backfire on him is similar to Wile E. Coyote's attempts to trap the Roadrunner.
It's revealed that Feldspar can read Saporian language.
This is Rapunzel's third time wearing shoes, following Tangled: Before Ever After (not including the disguise in "Rapunzel's Enemy") and "Painter's Block".
Running gag:
Rapunzel and Feldspar are called cheaters by Varian, Xavier, Kiera, Stan, Catalina, Pete, Vladimir, Monty, Ruddiger, Hamuel, Pascal and Maximus for using a map.
Mrs Crowley using an umberella to fly away references Mary Poppins.