In a city of change and reinvention, one constant in Houston is the red glow of the Dot Coffee Shop neon towering over the Gulf Freeway. For nearly 60 years, the iconic white-and-red pylon sign has stood tall along Interstate 45 near Loop 610, its geometric shapes harkening back to its mid-century modern origins. In all caps, it beckons to passersby, “OPEN 24 HRS.” Unless it’s Christmas, or a natural disaster has forced it to temporarily shutter, Dot is always open.