King Arthur's Castle (Grapevine, Texas)

1985 ad, source.
I'd like to thank Anonymous in Houston for cluing me into this one, a unique gas station with expanded food offerings (salads, barbecue, baked potatoes...but no fried chicken) that opened in 1985 and operated into the early 2000s and torn down soon after. The address of this place was 920 E. Northwest Highway, which is used by a Starbucks opened in 2007; however, the Starbucks occupied the plot of land just west of King Arthur's Castle.

As you can see below in this Google Earth aerial from 2001 the gas station had a turret on top of it as well as some other small signs in front of it; however, I'm not sure what, if any gas brand it offered.

Former Starbucks (St. George, Louisiana)

Picture sourced from Loopnet
Closed fast food restaurants is something I was always familiar with, by 2008 I could recognize the corpse of, say, a Wendy's, but a closed Starbucks was unheard of. That was the case of the Starbucks Coffee at 9837 Bluebonnet Boulevard which I came across in December 2008 (it had closed a month before). It was only operational for a little over a year, but luckily Starbucks Everywhere got a photo of it (which has proved helpful in research). By 2013 it had reopened as Dunkin' Donuts, but that failed within five years, and in spring 2019 it became Poké City (poke bowls). However, that appears to have been another COVID-19 victim. By early 2022 it became a Domino's, with the drive-through lane now used as a pick-up lane.