Moreover, manhole covers are not just utilitarian; they are also an unexpected canvas for art and expression. In cities like Tokyo and San Francisco, manhole covers feature intricate designs that reflect local culture, history, or significant landmarks. Artists and municipalities collaborate to celebrate the unique identity of their neighborhoods through these designs, turning a basic piece of infrastructure into a point of pride and an attraction in itself. Walking through these cities, one can find covers adorned with mosaics, symbols, or even playful imagery that draws attention and invites curiosity.