Sequence by Richard Serra

"Sequence" is a monumental sculpture constructed by American artist Richard Serra in 2006 using interlocking sheets of weathering steel. This specific steel alloy is famous for developing a stable, rust-like appearance over time when exposed to the elements.

The work consists of two continuous, spiraling steel ribbons that form a towering, labyrinthine corridor. Viewers are actively meant to walk both around the massive exterior and through the disorienting, curved interior pathways.

While I cannot provide the exact tonnage without hedging, sculptures in Richard Serra's torqued-ellipse series, like "Sequence," routinely weigh hundreds of tons. The sheer scale and mass of the weathering steel used are integral to the imposing physical presence of the artwork.

"Sequence" was acquired by the San Francisco Museum of Modern Art (SFMOMA). It is frequently displayed in their outdoor sculpture spaces, as the museum has the specific architectural infrastructure required to support its immense weight.