The world all around you is like a hidden eye picture. There's the surface-level image that everyone can see, but if you look at the world in a particular way (or with the right tools, in some cases), then you can see the secret symbols that lurk just out of sight. The images that are hidden from those who don't know what they're looking for, and which tie the world together in ways many of us don't think about.
For example, if you take a look around, you will definitely see things like...
#1: Metatron's Cube
This symbol is a metaphor for how life travels throughout the universe, with energy flowing through every aspect of creation, according to Thought Co. This symbol contains all of the Platonic solids (the pyramid, the cube, the octahedron, the dodecahedron, and the icosahedron), and therefore contains all the elements of the universe (fire, earth, air, spirit, and water, respectively).
The idea behind Metatron's Cube is that it represents the Tree of Life, and therefore the universe, and the knowledge of higher beings. It represents a path that humans can follow to plug themselves into the flow of energy all around them, and as a way for them to understand the universe on a different level. The symbol is, in many ways, a key. It doesn't give you the knowledge by itself, but it allows you to open doors if you're willing to understand the key, and how it's supposed to be used.
#2: The Flower of Life
The Flower of Life is a complex symbol that's made of overlapping circles arranged in a flower like pattern. An example can be seen at Token Rock. This symbol is ancient, appearing on the walls of shrines in India, on ancient Egyptian tombs, found throughout Greece, and it has been studied for centuries by people looking to understand the balance and perfection the design represents. Some hold that it prescribes certain forms of meditation, or that it holds a kind of Akashic Record that contains all the knowledge of the universe held in a simple, elegant, perfectly balanced code.
Like Metatron's Cube, this symbol has been found in places dedicated to spirituality and contemplation. It's been associated with the setup and design of Stonehenge, showing that the regular, even spacing of the circles can keep precise time for celestial events. While there are dozens of cultures associated with this symbol, each of them had their own unique take and twist on what it meant, and how it could be applied to one's daily life.
#3: The Golden Ratio
The Golden Ratio is one of those concepts you've heard about in math and art, but which many people don't see in the everyday world all around them. In short, the Golden Ratio says that if you took a line and cut it into two parts so that the longer part divided by the smaller part was the same ratio as the entire line divided by the longer part, then you have found the sweet spot that is the Golden Ratio. An example of what this looks like can be found at Live Science. It's often referred to as phi, the 21st letter of the Greek alphabet.
This ratio is particularly prominent in ancient architecture, including several wonders of the ancient world. The great pyramids of Egypt, for example, were built using the Golden Ratio. The same is true of structures like the Parthenon. As a result, this ratio shows up in a lot of modern architecture as well... though that may be more because of architects copying ancient designs, without understanding the underlying reason of why those structures are so beautiful, as well as so long-lasting.
#4: Vesica Piscis
If you're a student of astrology, then you're familiar with the Piscis birth sign (the fish, for those who are just casual horoscope readers). Aside from sharing a word, the Vesica Piscis has nothing to do with astrology, but it is a common term used when discussing sacred geometry.
The short explanation, according to Gaia, is that a Vesica Piscis is a place where two circles cross. You draw one circle, and then you draw a second with a starting point on the circumference of the original circle. This creates a third, shared space between the two circles referred to as the "bladder of the fish," and it is seen as a crossing over of two opposites, and the womb of creation for new energies, thoughts, and ideas. This symbol is often thought of as a Venn Diagram, but it also appears in the construction of other symbols like the Flower of Life. It's also been likened to the womb, making it a distinctly feminine symbol associated with birth and creativity.
#5: Archimedean Spiral
Named for Archimedes of Syracuse, the idea of the Archimedean Spiral is very simple. Think of a rug being rolled up around a central post, one layer atop the next. This happens when you coil a rope, when you roll up paper towels, or any of a hundred other everyday things. However, while this spiral pattern has its practical uses (as most examples of sacred geometry do), it also represents a kind of nesting pattern; a layering of truths and discovery that is also seen in other symbols like Metatron's Cube.
Like many important symbols, the Archimedean Spiral may be used to represent steps along a journey. Each step builds upon the last step as you go a little further, learn a little more, and understand a little deeper. The pursuit of the center of the spiral, and the knowledge that lies within it, can be helpful. It is not unlike those who move through the chakras to understand their inner selves and potential, or those who go through the different stations of the tree of life in order to unlock the wisdom found within. These different shapes speak to different people, acting as everyday metaphors we can use to grasp the intricacies of that secret world all around us.