A grandfather clock is a tall, freestanding clock that typically features a pendulum and weights. It is known for its distinctive design, often made of wood, and can be found in various styles, from traditional to modern. The clock's mechanism is usually powered by a winding system, requiring regular maintenance to keep it running accurately. These clocks are famous for their deep, resonant chimes that mark the passing hours. The name "grandfather clock" originated from a popular song in the 19th century, which referenced a clock that had been in a family for generations.