What weighs 1500 tons?

Answer 1

The metal shell of echigo-matsunoyamamuseum in Japan

Answer 2

A common example of an object that weighs 1500 tons is a locomotive engine, such as the Union Pacific Big Boy steam locomotive. Another example could be a large military tank, like the M1 Abrams tank, which also weighs around 1500 tons. In the context of nature, a blue whale, the largest animal on Earth, can weigh up to 200 tons, so a group of several blue whales could collectively weigh around 1500 tons.