Surface and interface are rich grounds where various intriguing properties appear due to their unique geometry, chemistry, and topology that differ from those in bulk materials. In this chapter, spatially resolved ARPES of AV3Sb5 is presented, in which the band structure of the A and Sb terminations of these materials and discovered the universality of the surface-termination-dependent self-doping effect indicative of surface polarity. Additionally, signatures of both universal and A-element-dependent characteristics of the three-dimensional CDW are captured.