411 REFERENCE · Wikibooks
Super Mario World/Vanilla Dome/Red Switch Palace
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
This Switch Palace has some bad guys in it. You can ignore them, or you can use the P Switch and Red Shell to get a 1-Up. Go through the pipe and press the switch. Red blocks do not provide any items, but make it insanely easy to access VANILLA SECRET 1, among other things such as allowing the possibility to enter the Special World.