How to Build a Tall Spaghetti and Marshmallow Tower


In 14 Cool Hand Drawn Steps

suspect science

Our 6ft 2in 'science prize winning' tower!
Spaghetti and marshamallow tower: tallest in the class

Master the art of building a really tall spaghetti and marshmallow tower. A surprisingly useful life skill considering the popularity of spaghetti and marshmallow towers at school science days and team building events.

So keep reading, I’ll be sharing my science prize winning design with you, a statuesque tower 189 cms tall (6ft 2in).

And while it’s not ‘rocket’ science, it is science… so ignore basic physics at your peril (I added that for the science teachers reading!).

But seriously, building a really tall spaghetti tower is trickier than you think, you’ll need a plan (below)… and plenty of patience!

Step by Step Guide

Before we get started, if you’d like the teacher’s pack, which includes a printable certificate and PowerPoint instructions, please subscribe below.

Here we go, the “how-to” guaranteed to stop your tall tower from teetering!

How to make a tall spaghetti and marshmallow tower: Step 1

Step 1: Start by building pyramids with four marshmallows at the base and one at the top. Use 1/2 length strands of spaghetti to connect the base and full length strands to connect the base to the marshmallow at the top.

And remember, always push the spaghetti deep into the marshmallow, it provides more grip (see fig B).


For the bottom two layers of the tower, double up the strands of spaghetti in the vertical connectors, it reduces slippage and adds support.

How to make a tall spaghetti and marshmallow tower: illustration 2

Step 2: Next, take two completed pyramids and join them together with a ‘bottomless’ pyramid.

Step 3: Connect the bases of the two pyramids with two strands of spaghetti.

How to make a tall spaghetti and marshmallow tower: Step 4-5

Step 4: Continue joining pyramids until you have three rows, each consisting of four pyramids.

Step 5: Connect the tops of the pyramids with horizontal lengths of spaghetti to complete the first layer.

How to make a tall spaghetti and marshmallow tower: Step 6-8

Step 6: Build a second layer of pyramids on top of the first layer, this one will consist of two rows of three pyramids.

Note: For layer 3 we have to change tack, because if it were another row of pyramids it would consist of only two pyramids!

Step 7: Start by connecting the six marshmallows at the top of layer 2 to four marshmallows in square formation. Add lots of diagonal cross braces to provide extra rigidty.

Step 8: Construct two ‘flying buttresses’ on opposite sides, each made from a single marshmallow supported by spaghetti, this will help support the spire.

How to make a tall spaghetti and marshmallow tower: Step 9-11

Step 9: To make the spire connect three cubes, with a base the same size as the four marshmallows in layer 3. Add DIAGONAL cross braces to each side, and across OPPOSITE sides, otherwise the cubes will collapse.

Step 10: Add two more flying buttresses, the mirror opposite to the ones you added to layer 3.

Step 11: To complete the spire add a ‘bottomless pyramid’ onto the top cube, to give the spire a nice point!

How to make a tall spaghetti and marshmallow tower: Step 12-13

Step 12: Building the spire separately means you can more easily move or transport your tower. When you are ready to join them, lower the spire onto the base so the ‘flying buttresses’ are aligned.


Don’t try burning or cooking the marshmallows in order to ‘strengthen’ them, it doesn’t work... and smell's bad!

Step 13: Fix them together by pushing short strands of spaghetti through both marshmallows in each ‘flying buttress’.

How to make a tall spaghetti and marshmallow tower: Step 14

Step 14: Spaghetti and marshmallow tower challenges often require an egg to be supported by the structure. The best way to do that is by creating a ‘nest’ from short strands of spaghetti pushed into the top marshmallow.

Last Word of Advice

As soon as your tower is four spaghetti lengths tall, the weight of the spaghetti will cause the lower layers to slowly slip (especially in warm conditions).

That’s why if you are going for height, you’re almost certainly going to have to use the ‘pyramid’ technique… trust me!

That’s it, I hope these instructions help, or at least give you some ideas!

Materials List

  1. 1 x packet of spaghetti
  2. 2 x large packets of marshallows (not jumbo size)
  3. Lots of patience!

Creative Takeaway

Even a spaghetti tower submits to the laws of physics… that’s why it’s such a great activity for science days, you learn so much, while having so much fun!

Written & Created By

Owner, Brick on the Egg - Ideation, Design, Illustration & Animation | Maker, Best Selling Author



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