Which were built for military defense and security. Throughout history, many powerful empires have built massive forts to defend their territories. Top 10 biggest forts in the world.
Built by the British in the late 19th century, this fort features a massive 100-ton gun that was once the largest in the world.
Located in Jodhpur, this fort covers an area of over 82 acres and features 7 gates and 9 towers.