Spiral staircases are nothing new or special, but these cool designs are definitely conversation pieces. Here’s something you may not know about this type of staircase: “spiral stairs in medieval times were generally made of stone and typically wound in a clockwise direction (from the ascender’s point of view), to place attacking swordsmen (who were most often right-handed) at a disadvantage.” Continue reading to see ten of the coolest designs.

10. Armstrong Building (University of Newcastle)

9. Museum of Design and Architecture (Glasgow)

8. Castle Hartenfels (Torgau)

7. Municipal Administration Building (Germany)

6. St. Stephen’s Basilica (Budapest)

5. University of Reading (Berkshire)

4. VivoCity (Singapore)

3. Periscope

2. The Slide

1. Glass

Bonus Video

[Sources 1 | 2 | 3 | 4]