Lighthouse

The lighthouse is a landmark that is found in the player's town in, , and.

Animal Crossing
In and, the lighthouse is found near the ocean and turns on when it starts to become dark. Once a year, the mayor will ask the player to turn on the lighthouse every night for seven nights (one week). This is the only time the inside of the lighthouse can be seen. If the player turns the light on each day, Tortimer will reward the player.

Animal Crossing: City Folk
In, the lighthouse is obtained through donations to the town fund. Once the fountain is obtained the player must donate 1,000,000 Bells, at which point either a lighthouse or windmill will be built. All of the players in the town can vote, and if the majority votes on a lighthouse, one will be built.

Trivia

 * It is rumored that if you have the lighthouse, it will increase the chance of rare fish appearing.
 * There is a way to hack the game so that you can walk on the lighthouse.