This shot of the entrance to the titular town of Twin Peaks is very iconic as it captures the abstract, eerie, and somewhat mystical vibe of the show.
The bird, known as a varied thrush, is another of the famous scenes from the shows opening credits. It serves to juxtapose the peaceful and serene nature of the town to its seedier and corrupt underbelly.
Detective Dale Cooper serves as our protagonist. He's an FBI agent sent to Twin Peaks to investigate the mysterious death of Laura Palmer. He has a penchant for diners and various sweet treats, in this case pie.
Throughout the show we get glimpses into an abstract, almost metaphysical, realm known as the red room, in which characters are given convoluted clues about the nature of Laura Palmer's murder.