Takoyaki (たこ焼き, lit. „grilled octopus“) are a popular kind of street food which you come across around nearly every corner in large Japanese cities, especially in the Kansai region (Ōsaka, Kyōto, …).
These came from the Tenjinbashi-suji in Ōsaka.
Edit: correct translation
Mate, if you write Kyōto, you also have to write Ōsaka
While we’re being pedantic,
lit. “octopus balls”
It doesn’t literally mean that, it’s more like “grilled octopus”.