A stairway that revolves around a central point as it rises is known as a spiral staircase.
"My grandfather used to work in a lighthouse with a spiral staircase."
ぐるぐる回りながら上に行く階段は、spiral staircase（らせん階段）として知られています。
例：
My grandfather used to work in a lighthouse with a spiral staircase.
祖父は、らせん階段のある灯台で働いていました。
I will write example sentences about your question.
"I walked up the spiral staircase. I went around and around until I almost felt dizzy."
"I went up the winding staircase."
"I saw a helical staircase in a fancy building."
The words spiral, winding, and helical have almost the same meaning. Helical means that it has a helix shape. A helix shape is the same as a spiral shape. A spiral shape is a design that turns around a central axis as it rises. A spiral staircase or a helical staircase is shaped like a DNA molecule.
質問についての例文を記載します。
I walked up the spiral staircase. I went around and around until I almost felt dizzy.
螺旋階段を登りました。もう少しでふらふらするまで、回りました。
I went up the winding staircase.
螺旋階段を登りました。
I saw a helical staircase in a fancy building.
立派なビルの螺旋階段を見ました。
spiral、winding、helical、三つは、ほぼ同じ意味です。helicalとは、helix shape（らせん形）のことです。helix shapeは、spiral shapeと同じです。
spiral shapeは、上に行くと同時に中心軸の周りを回る設計のことです。spiral staircaseや、helical staircaseは、DNA分子のような形をしてます。
"spiral staircase" or a set of stairs that spirals around to the top.
"twirly staircase" is another name of Spiral or Swirl that spins around from the center
"staircase that spirals around" is also a longer definition and more explained definition of a spiral staircase.
「spiral staircase（らせん階段）」は渦を巻きながら上がっていく階段を言います。
「twirly staircase」も「らせん階段」を表します。
「staircase that spirals around」は「spiral staircase（らせん階段）」の長い、説明的な言い方です。
Spiral or central staircases can be good for saving space within a property, however due to their small size they can be difficult to move things up from the ground floor.
These are stairs that twist and turn in the circular manger. There are other stairs or methods for getting from one story of a building to another which include straight stairways, escalators, elevators, Etc.
1) spiral staircase
螺旋階段は英語で spiral staircase と言うことができます。
階段は英語で stairs と言うこともできます。
例：
I ran up the spiral staircase.
私は螺旋階段を駆け上がりました。
The spiral staircase has ten stairs.
その螺旋階段は10段あります。
アメリカ合衆国 
日本 
イギリス 
南アフリカ 
オーストラリア 
