What took 15 years to build and the workers hauled 20000 tons of marble?

Well, darling, it sounds like you're talking about the Taj Mahal in India. It took a whopping 15 years to build that beauty, and those poor workers lugged around 20,000 tons of marble to make it happen. But hey, all that effort was totally worth it for one of the most iconic symbols of love in the world.