What was the purpose of moats in castles?

Quck answer

Castles had moats for several reasons. Firstly, moats served as a defensive feature, making it difficult for enemies to approach the castle walls. The water acted as a barrier, making it challenging to breach the castle’s defenses. Additionally, moats provided a means of controlling access to the castle. Drawbridges could be raised or lowered, allowing or denying entry to the castle. Moats also served as a deterrent, as the presence of water made it more challenging for attackers to siege the castle. Finally, moats could function as a reservoir, providing a source of water for the castle’s inhabitants during times of siege or drought.


When you were a child, did you ever imagine being a handsome prince or a beautiful princess? Why not? Movies make it seem like a wonderful life. Who wouldn’t want to spend their days in a grand castle?

Every morning, you could climb to the top of the castle walls and look out over the surrounding countryside. In the afternoon, you could ride your noble horse across the fields that make up your kingdom. At the end of the day, you could relax by taking a swim in that circular pool that surrounds your castle. What are we talking about? The moat, of course!

If you’ve ever watched a movie, read a story, or seen pictures of ancient castles, you’ve probably noticed that they almost always have a deep, wide body of water surrounding them. However, they were not built for entertainment purposes. The main purpose of a moat was to protect the castle from attacks.

As a defensive measure, moats were highly effective. Although they are usually shown as wide, deep bodies of water, moats were often just dry ditches. Some moats surrounded the castle itself, while others enclosed several buildings or even a small town.

Moats filled with water were usually supplied by a nearby water source, such as a spring, lake, or river. Dams could be constructed to control the water level in the moat. While some elaborate moats may have had stone walls, most moats had simple earthen banks left over from when they were dug.

As you have probably seen in movies featuring castles, the medieval times when castles thrived were also violent times. There were many dangers to worry about. In fact, why do you think castles were built? Simple homes were too vulnerable to looting and pillaging. Castles, on the other hand, provided safety through strong walls and fortifications.

As a defensive feature, moats were very effective. Castles without moats were susceptible to attacks from underneath, as invaders often found that the only way to catch the castle’s inhabitants off guard was to tunnel beneath the castle and attack from below. Moats, however, made it nearly impossible to tunnel under a castle.

When moats were filled with water, they were usually deep enough to hinder attackers from wading across. Besides the difficulty of swimming with weapons, attackers would be hesitant to attempt swimming across because they would be vulnerable to attacks from castle guards.

One of the few successful ways to overcome the presence of a moat was to use portable bridges to span the moat. However, carrying and setting up portable bridges before attempting to cross and besiege the castle still allowed ample time for castle guards to prepare to defend the castle.

Occasionally, you may come across stories about moats that contained alligators or crocodiles. While these creatures would provide an extra line of defense, these stories are merely myths, as it would be nearly impossible for such animals to survive in a moat. However, moats often did contain eels and fish. Castle residents would stock moats with these creatures to use as a food source.

Give it a try

We hope you enjoyed learning about moats today! Make sure to explore the following activities with a friend or family member:

If you have never visited a castle before, you can now experience it online through the Virtual Tour of Prague Castle. Take a look and see if it matches your expectations of what a castle should look like. Would you ever consider living in a castle? Have you ever wondered how long it would take to clean one?

In today’s world, a moat wouldn’t provide the same level of protection for a castle as it did in ancient times. We can think of our homes as our own castles. How do you defend your home? Are there any modern technologies that you use for home protection? Talk to an adult about the changes in home defense over the years.

Are you ready for some fun? Head to a nearby beach or lake with sand. If you live near the ocean, you’re in luck. If not, find a lake with a beach area. Ask an adult to take you there for a day of sand castle building. Don’t forget to include a moat around your creation! How tall can you make your sand castle? Keep building until you run out of sand!

For more information about castles, you can visit these websites:

– https://www.castles-of-britain.com/

– http://www.ancientfortresses.org/castle-moats.htm

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