Modern concrete could break up even in 50 years. However, Roman concrete structures least for thousands of years, because they used volcanic ash, which slowly transforms to aluminum tobermorite¹⁾.

The World's tallest building, Burj Khalifa, is made of 330,000 m³ concrete reinforced with 55,000 tonnes of steel.

Three Gorges Dam in Hubei, China, is the biggest and heavies concrete structure, build using 28,000,000 m³ of concrete and 463,000 tonnes of steel²⁾. It's reservoir contains 39.3 km³ (9.43 cubic miles) of water, weighting more that 42,000,000,000 tonnes³⁾.