The steampunk beauty of this walking dragline excavator, 'Ash 6/45'. Only six were made in the former Soviet Union in the late 70s, meaning seeing one walk around is rare. It walks very slowly. That’s because it weighs 280 metric tons.
A dragline excavator is a heavy-duty excavator used in civil engineering and surface mining. In the early 1900s, they made them walk, as they became too heavy to move around on the worksite.
In all but the smallest of draglines, movement is accomplished by walking using feet or pontoons, as caterpillar tracks place too much pressure on the ground and have great difficulty under the immense weight of the dragline.
It's not close to the biggest one, though. That is an American, Big Muskie, weighing 12,200 t and standing nearly 22 stories tall. It mined coal in Ohio from the 60s to the 90s. It was dismantled and sold for scrap in 1999. They saved the massive bucket, though and you can check it out on Google Earth if you want (which I did; good excuse for a road trip stop when I am in the US again)
ps: while quite steampunk, I love the little curtains in the window