Out of all the castles on Earth, have you ever wondered how big one can really be? Well just a few hours away, Poland is home to the world's biggest castle and its size is astounding

       Malbork Castle, sat on the east bank of the River Nogat in Malbork, appoximately 25 miles south of the Gulf od Gdansk, spreads across an area of a whopping 2.27 million square feet.

       The incredible medieval structure took 132 years to build, contains a staggering 30 million bricks, and is double the size of Buckingham Palace.

       It has also been on the UNESCO World Heritage Site list since 1997, where is it noted as a "spectacular fortress [that] bears witness to the phenomenon of the Teutonic Order state in Prussia."

       READ MORE: The world's nine biggest castles are incredible - two of them are in the UK

       The castle was built by the Teutonic Order, following the conquest of Old Prussia. The Teunotic Order is a Catholic religious insitution formed to help Christians on their pilgrimages to the Holy Land.

       The main aim of the castle's construction was to strengthen their control of the area following the Teutonic Order's 1274 supression of the Great Prussain Uprising.

       Whilst there are documents that relate to its construction, the building phases have been deciphered by experts and through administrative records.

       The first of the three castle bult was High Castle, described by Lonely Planet as "the formidable central bastion that was begun around 1276".

       Don't miss...

       Incredible mansion 'bigger than Buckingham Palace' left to rot in UK countryside [REPORT]

       World's biggest palace with 9,000 rooms is 'most valuable real estate on Earth' [MAPPED]

       World's biggest house has 'room for 5k people' and cost ￡1billion to build [REVEAL]

       The travel publication continued by explaining that over the following decades, the site "expanded considerably", with the Middle Castle built ot the side and the Lower Castle built further along.

       Malbork Castle was then siezed in 1457 by the Polish Army, during the Thirteen Years' War when the knights' military power started to break down. It then became the residence of Polish Kings.

       However, later invasions caused it to fall into decline and it was takenunder goverment protection in the 1800s, Lonely Planet explains.

       Today, the stunning Castle is restored and a museum that welcomes over 300,000 tourists from across the globe every year.