There is a couple of things to talk about here regarding this lovely photo of a guy juggling on the beach. Firstly is he juggling with three or four balls and secondly if its only three then is that the sun or the moon?

We have picked out a few of the steel cross members of this huge crane atop the new skyscraper 'One World Trade Center' in New York. But which is longer A-B or B-C. Well would you be surprised to find that they are both the same length?

Our latest design is called 'Spaceships'. It shows two space craft fly into a wormhole. The largest one is in front followed by a smaller ship. So where is the illusion? Well it's that actually both ships are exactly the same size.

We have designed this picture which shows a beautiful flower that looks like it has been locked up behind bars. But it seems to be gradually escaping - are the bars bending or is it just an illusion? 

This beautiful Elephant is hand painted (excuse the pun). We will put a few more of these on in time, but thought you might like to know a bit about the artist Guido Daniele. So, here is a short bio:

Guido Daniele was born in Soverato (CZ - Italy) and now lives and works in Milan. From 1964 to 1968 he attended Brera artistic High School. He graduated from Brera School of Arts (major in sculpturing) in 1972. He lived in India since 1972 to 1974 where he attended the Tankas school in Dharamsala. Since 1968 he has been painting and participating to personal and group art exhibitions.

In 1972 he started working as hyper-realistic illustrator, in co-operation with major editing and advertising companies, using and testing different painting techniques. Since 1986 he has been working and improving his personal usage of airbrush: he paints back-stages in different sizes (the biggest ones can be 400 square metres) for artistic and advertising pictures, tv commercials and tv programmes. He also creates trompe l'oeil, both in private houses and public buildings.

In 1990 he added a new artistic experience to his previous ones: using the body painting technique he creates and paints models bodies for different situations such as advertising pictures and commercials, fashion events and exhibitions. His personal artistic research has recently led him to the combination of the two traditional portrait techniques, which are photography and oil painting.

His "Handimals" method of body painting has a great international interest.

The bike illusion, that we reproduce courtesy of Deskarati, has unusual wheels. The movement seems to be of the spokes in the clockwise direction - but on closer inspection it looks like that this might just be an illusion of the shading going in an anti-clockwise direction. What do you think?

This cartoon cat above has a remarkable resemblance to the Warner Bros. favorite, Sylvester the Cat. But there is something not quite right - can you see what it is. The clue is in the question - Is Sylvester on Twitter?

Here is a new take on an eye tricking motion illusion, but with a bit of a twist. We took an old favorite and added some hidden text - so see if you can spot it. Don't take too long as these type of illusions can give you headache, it certainly gave us one designing it.

This is an illusion of the perspective type. On the left hand side we have a graphic representation of the  seven tallest buildings in the world. The tallest is the Burj Kahlifa in Dubai shown on the far left. On the right hand side we have another picture of the Burji. The illusion is that the two pictures of the Burj are both the same height. You can get more pics of the tallest building here - The Worlds Tallest Buikdings

Sited outside the State Library of Victoria, the pyramidal, Port Fairy bluestone sculpture represents a fragment of the library emerging from the pavement as an archaeological artefact might. It has been conceived to engage with its environment, visually connecting to its surroundings through both form and material. It was designed and constructed by Petrus Spronk.

Spronk's intention was to create a dialogue of sorts between art, history and place. His inspiration was Percy Bysshe Shelley's poem 'Ozymandias', which speaks of the fragile and transient nature of all that is human. Quoting from the poem, the pedestal reads: 'My name is Ozymandias, King of Kings. Look on my work you Mighty, and despair.' Architectural Fragment is a Pythagorean triangle, which expresses a strong association with the geometry of ancient Greece. Like a fallen classical monument, it reflects the past and alludes to the transience of the present.

We designed this illusion to include a number of different effects in the one picture. Firstly - we have the three vertical red lines, they all look to be different lengths, but are in fact all the same. Secondly - the two orange circle patterns that are surrounded by green circle patterns are also both the same size. Thirdly - the green circle patterns look to be moving which they are not.

Here we have two photos of the same building. Is the photo on the right showing the building leaning to the right more than the photo on the left? You would think so, but you would be wrong. They are both  exactly the same.

We have all heard of the expression, 'she has wonderful smiling eyes'. But this girl might be taking it to extremes. 

You might think that this English gent looks very dapper in his tall top hat. What you might not realise that his hat is wider than it is tall. 

Hallucii, a short animation made by Goo-Shun Wang

Here is a new take on an old favorite. We have added a few more faces to the original. There are now seven faces hidden in the woods. Can you find them all? Click the picture to make it larger if you're having trouble.

Click picture for larger view. Can you see what lies beneath?