🌌 Echoes Under the Sky: The Celestial Vault of Temple of Heaven

#summervacay Step into cosmic harmony at the Circular Mound Altar (Huanqiutan), also known as the Celestial Vault at Beijing’s Temple of Heaven. This round marble platform isn’t just architectural genius — it amplifies your voice through its perfect symmetry. Stand in the center and speak — you’ll hear your own echo bounce in the most surreal way. Surrounded by silence and sky, it's a sacred design aligned with heaven and earth, once used for imperial prayers. #templeofheaven #celestialvault #beijinghiddengems #echowall #ancientacoustics #spiritualbeijing #huanqiutan #chinesecosmos #historicsiteschina #architectureandritual