Goron City

Not to be mistaken for Goron Village of Majora's Mask, this is the home of the Gorons of Ocarina of Time, and is located mid-way up Death Mountain. In this city, there is a passage into the Lost Woods, which Link lust use to get to the Sacred Forest Meadow to learn Saria's Song. Then, so you can enter Darunia's sanctuary, you must play Zelda's Lullaby,and then, to cheer up Diaurna, Link must play Saria's Song. By doing this, Link can get the Goron Bracelets, which he can use to pick up Bomb Flowers.

Heart Pieces
A Goron outside Diaurna's Sanctuary asks you to bring fire from his sanctuary. To do this, you need to get out a Deku Stick, light it on one of the torches, and light all of the torches on the same floor as the sanctuary, which will cause the Giant Torch in the middle to start spinning. Then, after you get the Bombs, come back and throw one on the giant torch. If it blows up with a "Smiley face" facing the camera, a heart piece will pop out.