The Lighthouse

The Lighthouse is located on top of the Crystal Temple.

"An Indirect Kiss"
In "An Indirect Kiss", Steven, Lion, and Connie eat a picnic while Steven recalls the story of why there is now a fence around it. Prior to this episode there was not a fence around the top of the cliff that is formed by the Crystal Temple, but Amethyst falling off of the cliff near the lighthouse prompted Pearl to put the fence there to prevent others from falling and getting injured.

"Keep Beach City Weird"
Ronaldo Fryman researches paranormal activity here, as shown in "Keep Beach City Weird". This episode marked the first time the interior of the lighthouse was shown. A spiral staircase leads to the top, where there is a round room surrounding the light itself. The Crystal Gems broke a large hole in the wall of this room when they believed that Steven was in danger.

"Horror Club"
In the episode "Horror Club", Ronaldo Fryman, Steven, Sadie, and Lars went to the lighthouse to watch scary movies. While there, they were attacked by a Gem who was stuck in a wall of the basement of the lighthouse. Once freed, the Gem projected images of the past where it showed Lars and Ronaldo were once friends. It is the former headquarters of the Beach City Explorer Club.

Trivia

 * The Light House may count as one of the Gem Monsters, as it had a Gem in its walls and attacked Steven, Lars, Sadie, and Ronaldo.
 * However, unlike most of the other monsters, it only attacked because it wanted to defend itself (and possibly the others) from Lars.
 * The window, in front of the lighthouse, has a pentagon appearance similar to Steven and Rose's gem.