Mystery Atlas
City

Philadelphia

City in Pennsylvania, United States, where the Toynbee tiles first appeared in the early 1980s.

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In United States

This is a knowledge-graph entry: what our data records about Philadelphia and how it connects to the rest of the atlas. It does not have a full article of its own yet.

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How this topic links to the people, places, and ideas around it — drawn from our knowledge graph.

Related Mysteries

  • Toynbee Tiles

    Philadelphia contains Toynbee Tiles — The tiles first appeared embedded in Philadelphia streets in the early 1980s.

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Who Made the Toynbee Tiles?

Since the 1980s, cryptic linoleum tiles about resurrecting the dead on Jupiter have appeared embedded in city streets. No one has ever confirmed who made them.