To reach the Tower of Hera, you must first ascend Death Mountain. From the Eastern Palace area, head north. You'll encounter a cave entrance that leads to the mountain path. The path is linear but dangerous, with falling rocks and fire-breathing Moblins. Use your shield to block projectiles and your sword to defeat enemies. You'll need to navigate ledges and climb ladders. rent the Hammer from Ravio's Shop before attempting this, as it's required to progress through the mountain and the dungeon.
There are several small caves and passages along the mountain path. Some contain Rupees, while others offer temporary shelter from falling rocks. Keep an eye on the shadows to predict where rocks will fall. Eventually, you'll reach the summit where the Tower of Hera stands. Save at the Weather Vane outside the tower before entering. The Tower of Hera is a multi-floor dungeon that will test your platforming skills and your ability to use the Hammer effectively to solve puzzles and reach new heights.