Forest Temple

In Ocarina of Time
Deep within the Sacred Forest Meadow in the Lost Woods lies a temple inhabited by many fierce foes. It's an eerie, complex temple filled with strange puzzles and bewilderments that may come to shock you; such as an array of switches which invert hallways. Most of it's rooms and cooridors are covered with moss and vines and hold enemies like the Skulltula and Deku Baba. The temple has also recently been home to the Four Poe Sisters that lurk deep inside the temple and guard the way to it's master. The temple's music will also become a monster of its very own with its eerie, but beautiful tune and unnatural sounds. It's also the first temple where you meet the dreaded Wallmaster in OoT, and its boss is the fierce Phantom Ganon. Link journeyed here to save his childhood Kokiri friend Saria, only to awaken her as the Sage of Forest. Her power helped Link continue on his journey to free the other imprisoned sages.

Minor Enemies and Traps
Skulltula, Wallskulltula, Deku Baba, Big Deku Baba, Gold Skulltula, Blue Bubble, Green Bubble, Wallmaster, Wolfos, dropping ceilings

Trivia
The Forest Temple is known as the topsy-turviest level in Zelda history, followed by the Stone Tower Temple in Majora's Mask.

Background
Note: This is pure theory of fans. The Forest Temple was probably once a center of the arts, as it is one of the only art galleries in Hyrule.

In Twilight Princess
The Forest Temple is the first dungeon in Twilight Princess. It is housed in a massive tree in Faron Woods. It houses the Gale Boomerang, which is used to defeat its boss, the Twilit Parasite Diababa. The temple is different from the Forest Temple in Ocarina of Time in that it is one floor. It's also similar to the Woodfall Temple in Majora's Mask in that a lot of the rooms seem to be very swamp-like. The Gale Boomerang is also used to manipulate wind powered switches and bridges, allowing Link to access rooms deeper in the temple.