The Wobbly Jamboree of Ruins X

Ruins X, the public pitstop of balance, nestles itself between two cool campus spots - the Haggerty Museum of Art and the Helfaer Theatre, on the Marquette University grounds in downtown Milwaukee, Wisconsin. This 1978 brainchild of Ernest Carl Shaw is part of a whimsical series that messed about with weights, tilt, and arrangement. There's a soft humor in how these pieces teeter, entertaining any random pedestrian. Giving these a gander, you can't help but ponder if the next second sees them tumbling, making the whole installation even more fascinating.

Sources: Wikipedia, OpenStreetMap, Wikidata, Wikimedia Commons