Downtown

Downtown (which can also be called the Underground City or the Underwater City depending on the tide) is a hidden area in the game Super Mario 64 and Super Mario 64 DS, within Wet Dry World. To get to the abandoned town, the player has to launch Mario into a very tall mesh cage when the level is at maximum high tide. It is inaccessible at any other tide level. Once within the cage, the player must quickly swim through a tunnel with partially closed gates before Mario loses all of his air reserve.

The town has one Power Star and obtaining eight Red Coins can also unearth another Star. To get the Power Star, the player must obtain the Invisible Cap (or Power Flower for Luigi in the DS remake) and become invisible, then run through a cage which contains the Star. To retrieve all of the Red Coins, the player must look around by jumping on top of the buildings, balancing on thin walls, and breaking Bricks, all while strategically utilizing the Crystal Tap and the ! Switch.

There are some enemies in Downtown as well, such as Skeeters and two Fire Spitters. The latter was removed in the DS remake because they were completely useless in the small amount of water found in Downtown. Other Items found here include green and blue ! Blocks. In the DS remake of the game, a lone Pink Bob-omb can be found, who reveals where the eight Red Coins are located.

Appearance
Downtown is a somewhat modern yet small town, having only five buildings (which Mario cannot get into), plant life, and even a "central park" with thin stone walls and a statue of a pyramid. Another landmark is the small "shrine" that stands in front of the park. It has an opening where the player can collect the Star after gathering all 8 Red Coins. It is unknown what the closed-off caged area was meant to be, if anything.

Trivia

 * Downtown could possibly be a reference to Atlantis, a mythical underwater city.