Flag of Rotterdam the second city of The Netherlands - Color Changing Coffee Mug

'Flag of Rotterdam, Second City of The Netherlands' The flag of Rotterdam is the official banner representing this second-largest and most industrialized city in the Netherlands. Adopted on June 27, 1957, the flag features a white field divided into two vertical halves by a red stripe running down the center. On each side of the red stripe is a blue canton bearing three white stars. The design symbolizes Rotterdam's historic association with water (represented by the blue cantons), its industriousness (symbolized by the white field), and the city's unity, as suggested by the two identical halves joined in the middle by a central red stripe.