Step into the Temple of Heaven's Inner Altar where emperors once prayed for good harvests! The Hall of Prayer for Good Harvests stuns with its blue-tiled triple-eaved roof, while the three-tiered marble altar embodies ancient cosmology. Walk the Vermilion Steps Bridge - its 72 paving stones represent seasonal divisions. Don't miss whispering at the Echo Wall of the Imperial Vault, where your words magically travel along the curved surface. Every stone here whispers 600 years of history!