The Mona Lisa was painted in the year 1503 by Leonardo Da Vinci. The painting's eyes are very famous because they seem to follow you around the room!

Can you be as keen-eyed as the Mona Lisa and find a dog, a bird, a turtle, a child, and a book in the following paintings? Scroll down to find out the answers...

Can you find a dog in this illustration from 17th Century Japan? Click here and then use the zoom tool to search, then come back to this story and scroll down for the answer.

The dogs are here playing inside with their families! There are over 1,800 people in this picture of everyday life in the city of Kyoto, so well done if you managed to find these little pups.

Can you spy a little bird in this picture? Click here to search.

There are a few perching here on this roof...

...and a couple of roosters crowing down near the bottom! The picture shows a group of people arriving in a port by boat, welcomed by crowds of people, dogs and birds.

This tapestry is inspired by a book called The Hobbit, and includes dragons, eagles, and even Gollum. But can you spot the humble turtle? Click here to search.

The turtle is over here in Lake Town Harbor, next to a blue barrel! Have you read the book of Bilbo's adventure?

This is a really tricky one. Can you spot a young child in the crowd? Click here to look closer.

The little boy is here, on the balcony with the musicians. This is actually a depiction of the composer Mozart when he was a young boy! He's looking right at you. Have you just walked into the room to join the wedding feast?

There are lots of books in this painting, but did can find one by someone called Ovid? Click here and see.

Stonehenge is found on the flat green expanse of Salisbury Plain, England. This standing stone circle has mystified generations who have speculated that it was built by ancient Greeks, Egyptians, druids, or even wizards.

What we see today is actually the work of generations of neolithic and bronze age farmers. The ring ditch, the small 'blue stones', and large 'sarson stones' were all added by successive generations, each with their own design and perhaps their own unique beliefs.

Stonehenge isn't the only prehistoric monument in this landscape. Within just a few miles you'll find Woodhenge, the Durrington Walls, iron age barrows, and the Dorset Cursus. Evidently something important was drawing people here…

Ancient cities aren't unusual, but Çatalhöyük stands out as the oldest city on Earth. What makes it mysterious though, is that it was built between 7100-5700 BCE, long before humans had even invented farming, writing, wheels, or metals - so what were they doing there?

The people of Çatalhöyük were probably nomadic hunter-gatherers, and maybe only lived indoors during the winter. The remains of the city show that there was very little social division, it seems like they were living a very equitable, communal lifestyle.

This reconstruction shows a typical house. They were small and packed tightly. With no streets between the buildings, the main entrance was a ladder in the roof. They were scrupulously clean, but, perhaps unsettlingly, they buried their dead under the floors of their own homes.

Boundless and bare, the lone and level sands stretch far away here in the Nazca Desert in southern Peru. But look closer (or, rather, look from a distance) and you'll discover the ancient Nazca Lines.

It's no surprise that these gargantuan rock carvings remained almost unknown until the invention of the aeroplane. The lines, made by digging a shallow trench in the gritty earth, were made using a simple system of ropes and stakes.

But why? Archaeologists have suggested they look like enlarged textile designs, or that they might mark water sources or ritual pathways. But perhaps the most popular theory is that they are representations of the constellations.

The Hypogeum of Ħal Saflieni was discovered in 1902 by workmen digging cisterns for new houses in Paola, Malta, and is an exquisitely preserved example of prehistoric Maltese architecture. It is thought to be a neolithic temple and necropolis dating to the 3300–3000BCE.

The underground structure may have originally been a natural cave, expanded over time with pick axes made of antler, flint, and obsidian. The chambers were carefully designed to let in sunlight from the surface, and one appears to be aligned with the winter solstice.

Archaeologists have discovered the remains of over 7000 individuals buried in these subterranean chambers. Some of the skulls show signs of artificial elongation, similar to those of ancient Egyptian priests, which has prompted speculation about who built these tombs.

Pumapunku is part of the Tiwanaku temple complex dating to 536CE. It lies near Illimani mountain, a sacred peak that the Tiwanaku believed to be home to the spirits of their dead. While it may lie in ruins, it was once a wondrous construction, faced with polished metal.

The mystery here is how the builders of Pumapunku calculated and cut such precise stonework, working only with stone tools. Their stonework is so regular that some historians have suggested they may have mass-produced temple parts like building blocks.

They were evidently experts in descriptive geometry, and must have had some practical system for communicating their designs, yet without written language these fascinating cultural details are entirely lost to us.

While fortifications have been built in Japan since the 8th century, many of those that remain today, such as Inuyama Castle in Aichi, date to the Heian Period (794–1185 CE). This era of Japanese history saw the rise of local lords and of the samurai warrior class.

The familiar style of tall stone and wooden keeps known as tenshu were developed in the Sengoku period (1467–1603 CE). Originally, these were purely practical structures, designed to be used by threatened daimyō, or feudal lords, in the vicious civil wars of the era.

Over time, these temporary military structures became permanent homes and acted as palaces. They became increasingly elaborate and decorated with ornamentation as the owners sought to show off their keen aesthetic sense as much as their military prowess.

Standing on the summit of Mount Kinkazan, Gifu Castle presents an imposing image, and it was famed as a stronghold. But looks can be deceiving. In the 16th century the castle was captured by just 16 men led by the samurai Takenaka Shigeharu.

Many castles continued to be used right up until the twentieth century, and some even played a part in the Second World War. The ruins of Zakimi Castle were turned into a gun emplacement by the Japanese army, and following the war, it became a US army radar station.

Sadly, many other castles were utterly ruined. Ōgaki Castle survived the Battle of Sekigahara in 1600, but in 1945 the entire castle was destroyed by American bombing raids. The castle tenshu that stands today was rebuilt in concrete in 1959 to house a museum.

Himeji Castle is one of the few genuine historic artefacts. This castle has stood 700 years, surviving all wars and earthquakes that demolished many other structures. It is considered alongside Matsumoto Castle and Kumamoto Castle as one of the country's premier fortresses.

The dinosaurs were amongst the largest creatures ever to live on Earth. They dominated the land and the sea for three geological periods: the Triassic, Jurassic, and Cretaceous, a timespan of hundreds of millions of years. Experience them here in Street View and VR!

Did you know: there are fewer years between us and the last dinosaurs (65 million years), than the last dinosaurs and the first dinosaurs (approximately 178 million yeas).

Take a look the Brachiosaurus, or Giraffatitan as it's now known, at the Natural History Museum, Berlin.

Many people across the ages had found dinosaur bones, but it was only in the 19th Century, with the discoveries of William Buckland, that people began to think that they might be ancient lizards, rather than dragons or giants.

Buckland was the first to describe a dinosaur, which he named Megalosaurus. Before long, Iguanodon, was discovered by Mary Ann Mantell, who believed it resembled a modern iguana. This duck-billed Anatotitan was discovered in 1904 in central Montana by Oscar Hunter.

Discoveries were soon made across the world, and the fashion for all things prehistoric exploded. Dinosaurs play key roles in Jules Verne's 1864 novel Journey to the Center of the Earth, Sir Arthur Conan Doyle's 1912 book The Lost World, and the iconic 1933 film King Kong.

Tyrannosaurus rex may be one of the best-known of all dinosaurs, and while you wouldn't want to be stuck in a room with one, it was by no means the largest. Behind this skeleton at the Naturmuseum Senckenberg is the giant leg of a Supersaurus, truly one of the largest to exist.

For decades, scientists couldn't agree on how the dinosaurs were wiped out. Some suggested a massive volcanic eruption, others that they died of an infectious disease, or that mammals simply outcompeted them.

It was only in the 1980s, when the Chicxulub impact crater was discovered, that the theory of an asteroid impact became widely accepted. But today we know that not all were killed, some of their descendents live among us, having evolved over millennia into birds.

Ok, these aren't real, and by modern standards they aren't very accurate. But these concrete sculptures were the first dinosaurs many people saw, and they started the craze for these 'terrible lizards'.

They were made in 1854 for the Crystal Palace in Bromley, London. Since then, they've inhabited a small group of islands in Crystal Palace Park, and while they may look a little shabby today, they're loved by many, and protected as historic monuments.

Thanks for joining this journey of discovery. But before you go - what do you call a one-eyed dinosaur?


Do-you-think-he-saw-us?