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Product catalogue

Science Centre AHHAA offers a variety of fun and scientific exhibits for purchasing! All the exhibits are made by our own exhibition masters and many of them are completely unique. Each of the exhibits is also on display at AHHAA, so you can try them yourself!

Exhibit purchases

Purchasing information:

Mon-Fri 9-17

List of exhibits

Backwards Scooter

It takes a lot of practice to learn how to ride a bicycle. You might think it would be easier to ride a scooter instead. But AHHAA’s backwards scooter is on a completely different level – one that could prove difficult for even a seasoned cyclist. When you turn the handlebar in one direction, the front wheel of the scooter turns to the exact opposite. This exhibit will show you how skilled you really are!

Price:  2034 €
Time of delivery: Starting from four weeks


Rheoscopic fluid is placed in a thin cylinder. When you spin the cylinder, the light that reflects from the fluid shows the formation of numerous whirls and spirals. Change the speed of spinning and the size and shape of whirls will change as well. This visually stunning exhibit is also a great favourite of our visitors, as each swirl is unique and every spin you create changes the look of the whole exhibit.

Price: 2340 €
Time of delivery: starting from four weeks

3D Tic-Tac-Toe

Everyone has played this game on a piece of paper, but taking on your opponent is completely different in 3D! This exhibit consists of 3 x 9 coloured balls (red, green and yellow). 2-3 people can play at time.

The aim of the game is similar to a regular tic-tac-toe: get three balls of a same colours in a row. What’s different, however, is that in AHHAA’s version of tic-tac-toe, you can create the rows in many different ways, using either one or all of the levels: from top to bottom, right to left or diagonally.

Price: 1260 €
Time of delivery: starting from four weeks

Plasma Ball

In the middle of this gas-filled sphere is an electrode that can be powered when connected to the electric grid. Thanks to the gases, the numerous colourful plasma filaments are constantly spreading out from the centre to the surface of the dome. Put your hand on the sphere (or close to it) and you can change the course of these electrical charges!

Price: 756 € (15")
Time of delivery: starting from four weeks

Wave Machine

Waves can move in water, air and ground. We’re probably most familiar with the waves in water, as this is where they’re the most visible. However, when looking at a lake or sea, we usually don’t understand where the waves actually come from. Wave machine can easily show you how it happens. The machine is filled with mysterious fluids that move in slow motion, making it especially easy to observe the formation of the waves.

Price: 4140 €
Time of delivery: starting from four weeks

Letter Puzzles – Letters H, T and M

Even though we learn to write in early childhood, this exhibit will prove tricky for even the best writers among us! To solve the puzzles, your linguistic skills won’t be as helpful as your visual thinking. Three different letters have been broken down to smaller pieces and it is your task to put them back together. You can test yours skills with an H, T and M.

Price: 153 € 
Time of delivery: starting from four weeks

"Put your head in the box"

This exhibit is made up of six mirrors and their multiple reflections create marvellous patterns. You can peek into this giant kaleidoscope from both of its ends. Thanks to the regularly positioned system of mirrors, the figures that appear are beautifully symmetrical. See the video below and get lost in the world of mirrors!

Price: 1890 €
Time of delivery: starting from four weeks

Laser Table

A laser is a light source that emits light with constant wavelength and strength. This exhibit will show you how lasers work.

There are pieces of glass of various sizes and shapes inside a transparent cylinder. There is also a laser in the middle of the glass pieces. When you turn the cylinder, a laser beam passes through the pieces and creates an enjoyable light show. When you look more closely, you can see how the direction and reflection of the laser beam vary while passing through different pieces of glass.

Price: 3330 €
Time of delivery: starting from four weeks

Interactive Sandbox

Here in this giant sandbox, you can shape the landscape just the way you want to: dig canals and lakes, pile up hills and mountains. A special computer program projects a real topographic map on the sand, so you can easily see how the locations and shapes of higher landforms and bodies of water are related to each other and how different landscapes are pictured on the maps.

Price: starting from 8064 €
Time of delivery: starting from four weeks

Polaroid Disco

Polaroids consist of layers of dichroic (e.g. herapathite) crystals embedded in a thin film (such as cellophane or transparent plastic). These layers are capable of polarising light. This exhibit has two parts: an LCD screen and a ´work of art´ made of Polaroid sheets. When separated, they’re both black and white. But when you look at the screen through a spinning polaroid circle, a magical world of colours unravels in front of your eyes.

Price: starting from 4410 €
Time of delivery: starting from four weeks

Bubble Pumps

This exhibit consists of three pipes filled with liquid. Pump air bubbles in them and see how the different viscosity of different fluids affects the shape and speed of the bubbles. Bubbles of different sizes expand, rise and chase one another – and offer a fun and colourful sight. You can purchase the whole exhibit (all three pipes), but also different pipes separately.

Price: 3780 €/each
Time of delivery: starting from four weeks

Exhibits from "Sail or Sink?"

"Sail or Sink?" is an exciting interactive exhibition for the whole family! It features 14 hands-on exhibits installed in large intermodal containers, where everyone can see, read and experiment with how the forces of nature act at sea and how they have have influenced maritime history.

The guests will be able to generate waves or whirlpools, steer ships through locks, go under water, escape from a sinking ship and much more. Most exhibits have an information panel and touchscreen to display explanations about the natural phenomena and vivid stories from maritime history.

The exhibition will offer plenty of activities and discoveries to children as well as adults!

"Sail or Sink?" was created by Science Centre AHHAA and Estonian Maritime Museum.

The price and delivery time of the exhibits are negotiable.

1. Formation of New Bodies of Water

In this big sandbox, you can design the terrain as you like: create canals, dig lakes or form hills! A special computer program projects a real topographical map on the sand. This enables to see well how the relief is related to the position and shape of bodies of water and how the real landscape is represented on geographical maps.


2. Locks

Thanks to locks, ships can navigate between different water levels, and many sea routes have become shorter and safer. The visitors can steer a ship through locks and find out how locks work.


3. Propeller

Today almost all ships move by means of propellers. This exhibit enables you to study why and how propellers make ships move and how the movement depends on the position of propeller blades. You can also try to find a position of propeller blades which makes all the water move in the tank.


4. Variations of a current

The flow of water around the hull of a moving ship always depends on the hull shape. Waves generated by a moving ship will depend on the ship’s speed and the depth of water. Here, you can use models of different shapes to see what kind of traces they leave on the water and find out why ships moving in parallel close to each other are in danger of collision.


5. Waves

Waves travel through water, air and even ground. We know best about the movement of waves in water because such waves can be easily seen. By experimenting here you will find out how waves are generated, how they travel in water and how the wave height is affected by the coast shape.


6. Whirlpools

Legends and old sea maps tell us about giant whirlpools that sailors have dreaded throughout the ages. This exhibit explains where and how whirlpools form and whether they are indeed as dangerous as the legends say.


7. Bermuda Triangle

During the recent 60 years, the notoriety of the Bermuda Triangle has been fed by fiction and numerous rumours. Let us take a closer look and find out if a well-known theory about the sinking of ships is actually true: could there really be water where nothing can float?


8. Loading of a Ship

Nowadays enormous quantities of goods are transported by large cargo ships. Those big weights must be arranged properly on board the ship to be on the safe side at sea. This exhibit offers an opportunity to try out how difficult it is to properly load a ship and what can happen when a mistake has been made in the placement of cargo. In addition you can read vivid examples from maritime history.


9. Survival Drill

At sea we must always consider the risk that something goes wrong and the crew and passengers must leave the ship fast and safely. Here you can test how difficult it is to find your way and stay calm on a listing ship and learn about what you should know in order to cope in a lifeboat.


10. Diving

Although 2/3 of our planet is covered with it, water is for us a dangerous environment, where we cannot survive long without special equipment. Let us study what dangers lurk there when we dive and why a person cannot dive into infinite depths. For those who look at the tank from above, the people in the tank will seem to be under water.


11. Water Pressure

Just as there is air pressure on the ground, there is water pressure in the sea and it increases with depth. Therefore, going into deep water is dangerous and complicated. The guests can test on themselves how water pressure acts on the body and what water pressure means in great depths.


12. Underwater Robots (ROVs)

Working under water, finding a sunken ship and lifting it up to the surface are very complicated tasks, for which underwater robots or ROVs are increasingly used. In the tank, an ROV equipped with a camera can be controlled by means of levers. How easy is it to find the ship’s captain from the bottom of the sea or read the ship’s name from the hull?


13. Weights in Water

Why do objects always seem to weigh less in water? When we tug the rope, the submarine will move up. Here we learn why objects float or sink and in what kind of water a person cannot sink to the bottom.


14. Recovery of Sunken Objects

Sometimes just a minor mistake is all it takes to sink a ship but a lot of time, skills and money will be required for lifting a sunken ship up. Here the guests learn what kind of equipment is used for that purpose and can test it themselves: inflate air cushions and remove water from the ship by means of a bilge pump. Can you keep the ship in balance?