The exhibition shows how time-measuring devices transformed into carriers of scientific ideas, symbols of eras, and artistic images. The exhibition brings together over 800 items from the 17th to the 20th centuries from several museum collections and demonstrates how masters, scientists, and artists from different eras created not just precise mechanisms, but expressive objects with philosophical meaning. The clocks vary in shape, scale, and materials and are arranged in chronological order, allowing visitors to trace the evolution of concepts of time. Mechanical clocks became the first mass automatic devices for practical use and remained the most complex technical invention for three centuries, stimulating engineering and artistic thought. In the Middle Ages and the Modern Era, they defined the rhythm of urban life, adorning towers and bell towers, while their mechanisms became symbols of cities. Photographs of rare tower clocks from the 16th to the 19th centuries complement the narrative of public time. Clocks from the 17th and 18th centuries are presented as items of palace life: sand, cabinet, and table clocks created in various European centers. Portable models-travel and carriage clocks-embody the idea of movement and precision on the road, reflecting the change of eras and the expansion of horizons. Paintings and interior scenes help to see floor, mantel, and wall clocks in the space of the 18th and 19th centuries, where mythological and symbolic motifs resonate in the paintings and forms. The 20th century is represented by mechanisms associated with key historical events-from military victories to space exploration, where time becomes a witness to heroism and memory. From solar devices to astronauts' clocks, the exhibited objects form a continuous line-a arrow of time connecting ancient observations of the sky with modern technologies and the eternal human quest to comprehend the mystery of the passage of time. The exhibition takes place at the Palace of Tsar Alexei Mikhailovich at: Large Exhibition Hall, entrance 3. Andropov Avenue, 39, building 69. Find other exhibitions in Moscow on KUDAGO.