It's about one-and-one-tenth times as heavy as The Statue of Liberty.
In other words, 25,000 tonnes is 1.01 times the weight of The Statue of Liberty, and the weight of The Statue of Liberty is 0.990 times that amount.(a.k.a. Liberty Enlightening the World, a.k.a. La Liberté éclairant le monde) (total weight, including foundation)
The total weight of the Statue of Liberty, including her base is roughly 24,600 tonnes. The statue was designed using an optical trick known as "forced perspective" to make the statue appear proportionally correct when viewed from its base and is, in actuality, disproportionately large at the top.
It's about one-and-nine-tenths times as heavy as The Brooklyn Bridge.
In other words, 25,000 tonnes is 1.8770 times the weight of The Brooklyn Bridge, and the weight of The Brooklyn Bridge is 0.53280 times that amount.(a.k.a. New York and Brooklyn Bridge) (Manhattan and Brooklyn, New York City, New York) (total weight)
The total weight of the Brooklyn Bridge is approximately 13,320 tonnes. In a promotional event to prove the bridge's stability shortly after it opened, entertainer P. T. Barnum led a parade of 21 elephants across it in May of 1884.
It's about two-and-a-half times as heavy as The Eiffel Tower.
In other words, 25,000 tonnes is 2.480 times the weight of The Eiffel Tower, and the weight of The Eiffel Tower is 0.4030 times that amount.(a.k.a. La Tour Eiffel) (Paris, France) (total weight)
The Eiffel Tower weighs approximately 10,100 tonnes. Architected to be quickly assembled, the Tower contains only 7.5 cu. m (260 cu. ft) of solid material.
It's about one-fifth as heavy as The CN Tower.
In other words, 25,000 tonnes is 0.212030 times the weight of The CN Tower, and the weight of The CN Tower is 4.71630 times that amount.(a.k.a. La Tour CN, a.k.a. Canadian National Tower, a.k.a. Canada's National Tower) (Toronto, Canada)
The CN Tower weighs approximately 117,910 tonnes. The Tower is home to the world's highest glass floor — a viewing area that allows visitors to look straight down 342 m (1,120 ft) to the ground below.
It's about one-tenth as heavy as The Sears Tower.
In other words, 25,000 tonnes is 0.12390 times the weight of The Sears Tower, and the weight of The Sears Tower is 8.071 times that amount.(officially "Willis Tower" as of 2009) (Chicago, Illinois)
The Willis Tower weighs approximately 201,800 tonnes. The outer wall surface of the Tower is covered with black anodized aluminum panels which would total 110,000 sq. m (28 acres) if laid out together.
It's about one-fifteenth as heavy as The Empire State Building.
It's about nineteen times as heavy as a Tree (Sierra Redwood).
In other words, the weight of a Tree (Sierra Redwood) is 0.053 times 25,000 tonnes.(a.k.a. Giant Sequoia, a.k.a. Sierran redwood, a.k.a. Wellingtonia, a.k.a. "Big Tree", Sequoiadendron giganteum)
The weight of wood in a Giant Sequoia is 1,300 tonnes. General Sherman, a specimen in Sequoia National Park in Visalia, California, is the largest tree in the world by volume, with an estimated weight of about 1,900 tonnes.