Monoliths are categorized by being stone structures, usually man-crafted and weighing at least ten tons. Many monoliths remaining today puzzle archaeologists as to how they were shaped, moved, and the purpose they served. Basically, they’re pretty interesting. At the very least, it’s something to impress someone at a party with:
Thought to be the largest monolith in the world, Stele Base an unfinished construction from the Ming Empire, located in Nanjing, China. It's estimated weight is approximately 16,300 tons.
Stone of the Pregnant Woman is located in Baalbek, Lebanon and gets its name from the legend of a pregnant woman who tricked ancient Baalbek residents into believing she knew how to move the stone, but would prove her knowledge only if fed until giving birth. Estimated weight is 1000 tons.
As the title suggests, Unfinished Obelisk is an incomplete work, located in Aswan, Egypt. Discovered in 2005, If completed it would have been the largest Egyptian obelisk ever finished. It is carved from bedrock with an estimated weight of 1100 tons.