Lihzahrd

The Lihzarhd (Also known as the Jungle Temple) is the Jungle's hardmode dungeon. It is a small (at least compared to the normal dungeon) structure that resembles a mayan pyramid, with winding corridors down to a boss room at the bottom. The boss room contains a Lihzahrd Altar, which can be used to summon the Golem with Lihzahrd Power Cells.

Throughout the temple are a number of traps, including flamethrowers, spear traps, spiked balls, and other potentially dangerous trap variants. They are activated by Lihzahrd Pressure Plates, which only respond to players.

Trivia

 * The name Lihzahrd is a mispronunciation of the word "lizard". The fact that lizards are the primary enemies in the temple is not a coincidence.

(Button is not included in the picture, but you will need it.)
 * The Teleporter seems allow the player to go inside the temple without a Temple Key.

Just place them a thin part of a wall and you can enter trough it. Also a good fix if the generation of the tample glitched and your facing a wall.
 * Other good way to enter the temple without a key is with Actuator's.