Watches are a piece of technology that has often doubled up as works of art. Designers Sean Yu and Yiting Cheng came up with this spectacularly unconventional table watch. Called the 4th Dimension, the watch resembles a spiral staircase, with the hands on the top. Made from concrete, this is indeed the only watch we’ve seen made from a building material as such. To accompany this watch, the designers have also crafted a pen from concrete, called the Concrete Rollerball Pen. The pen sports a contour shape to provide better grip. Concrete concepts that are bound to inspire designers, the 4th Dimension clock is worth the weight!