Editing World 1-Fortress

{{level infobox
|title={{world|1|fort}}
|image=[[File:SMB3 World 1-Fortress.png|256px]]<br>''Super Mario Bros. 3''<br>[[File:SMAS SMB3 World 1-F Screenshot.png|256px]]<br>''Super Mario All-Stars''<br>[[File:SMA4 World 1-Fortress.png|240px]]<br>''Super Mario Advance 4''
|code=World 1-Fortress
|world=[[Grass Land]]
|game=''[[Super Mario Bros. 3]]''
|limit=300
|boss=[[Boom Boom]] (grounded)
|before_alt=[[World 1-2 (Super Mario Bros. 3)|<<]] [[World 1-3 (Super Mario Bros. 3)|<<]]
|before=[[World 1-4 (Super Mario Bros. 3)|<<]]
|after=[[World 1-5 (Super Mario Bros. 3)|>>]]
|track=Fortress BGM
|sample=[[File:Fortress Theme Super Mario Bros 3.oga]]
}}
'''{{world|1|fort}}''' is the [[fortress]] and fifth level of [[Grass Land]] in ''[[Super Mario Bros. 3]]''. It can be accessed after completing [[World 1-2 (Super Mario Bros. 3)|World 1-2]], and its own completion unlocks [[World 1-5 (Super Mario Bros. 3)|World 1-5]].

==Layout==
[[File:SMB3_World_1-Fortress_Whistle.png|thumb|left|Location of the Magic Whistle]]
As the first fortress level of the game, this level is relatively simple. Obstacles such as [[Roto-Disc]]s and [[Lava Bubble|Podoboo]]s are introduced, as well as [[Dry Bones]]. There are multiple gaps to jump across, while avoiding the Podoboos that continuously rise up and down between them. A [[? Block]] containing a [[Fire Flower]] may be found here. After more gaps, there are a few sets of Roto-Discs that the player must get through, followed by more gaps. At the end of the section, a door leading to the next part of the level may be found. Another ? Block, this time containing a [[Super Leaf]], is also found here, along with a single Dry Bones.
Beyond the door is a hallway with a spiked ceiling. The ceiling slowly rises up and down, meaning the player must duck in order to avoid taking damage from the spikes. At the end of the section is another door, which rises up and down from the ground with the ceiling. Beyond this door is [[Boom Boom]]'s arena; defeating Boom Boom will destroy the fortress, unlock the gate near [[World 1-1 (Super Mario Bros. 3)|World 1-1]], and allow the player to continue onto World 1-5.

The level has a secret exit that is accessible by [[Raccoon Mario]] only. It can be reached by [[dash]]ing near a door while the [[P-Meter|Power Meter]] is filled and flying up towards the ceiling. By continuing right, the player character can enter a door to another room with a [[Recorder|Magic Whistle]]. When collected, the fortress is cleared instantly, although the gate near World 1-1 does not open.
{{br|left}}
==Enemies==
{{number of enemies
|image1=[[File:SMB3 Lava Bubble.gif]]
|name1=[[Lava Bubble|Podoboo]]
|count1=7
|image2=[[File:Rotodisc.gif]]
|name2=[[Roto-Disc]]
|count2=3
|image3=[[File:SMB3 Dry Bones Sprite.gif]]
|name3=[[Dry Bones]]
|count3=1
|image4=[[File:Boomboom.gif|class=blackbg]]
|name4=[[Boom Boom]]
|count4=1 (boss)
}}

==Items==
{{item locations
|image1=[[File:SMB3 Coin Sprite.gif|Coin]]
|name1=[[Coin]]
|count1=0
|image2=[[File:Mushroomsmb3.png]]
|name2=[[Super Mushroom]]
|count2=2
|notes2=Replaced with one of two power-ups if Mario is already in Super form
|image3=[[File:Fire Flower-SMB3-sprite.png]]
|name3=[[Fire Flower]]
|count3=1
|notes3=Replaces a Super Mushroom in the first block if Mario is already in Super form
|image4=[[File:SMB3-NES-SuperLeaf.png]]
|name4=[[Super Leaf]]
|count4=1
|notes4=Replaces a Super Mushroom in the second block if Mario is already in Super form
|image5=[[File:SMB3 1-up.png]]
|name5=[[1-Up Mushroom]]
|count5=0
|image6=[[File:Warp Whistle.png]]
|name6=[[Recorder|Magic Whistle]]
|count6=1
|notes6=Found in a small chest in the secret room
}}

==Level map==
{{Wide image|SMB3 World 1-F Map.png|648|Map of {{World|1|fort}} (''[[Super Mario Bros. 3]]'' version)}}

==Names in other languages==
{{foreign names
|Ita=La Fortezza<ref>{{cite|title=''Club Nintendo'' (Italy) Volume 3 Issue 6|date=1991|page=17}}</ref>
|Ita2=Mondo 1-Fortezza<ref>{{cite|date=November 15, 2018|title=''[[Super Mario Bros. Encyclopedia|Super Mario Bros. Enciclopedia]]''|publisher=Magazzini Salani|language=it|isbn=889367436X|page=38}}</ref>
|ItaM=The Fortress
|Ita2M=World 1-Fortress
}}

==Trivia==
{{multiple image
|footer=
|image1=CHB124JapanFortress.png
|width1=180
|caption1=Japanese version
|image2=SMB3 World 1-Fortress Spiked Ceiling Screenshot.png
|width2=180
|caption2=International version
}}
*In non-international releases of ''Super Mario Bros. 3'', the door into Boom Boom's room is placed further from the wall and some spikes on the ceiling are positioned differently, making entering the door more difficult.

==References==
<references/>

{{SMB3 levels}}
[[Category:Fortresses]]
[[Category:Volcanic areas]]
[[Category:Super Mario Bros. 3 levels]]