NEMO turns familiar phenomena into experiments: Fenomena covers light, sound and static electricity, while Elementa includes a laboratory. Its daily Chain Reaction demonstration connects cause and effect; check the programme on your chosen date. Tickets have a start time, so reserve accordingly.

It beats Miraikan for our preference for everyday experiments over questions about emerging technology. Paris wins for dedicated age bands plus themed exhibitions. Robot enthusiasts may reverse the Tokyo comparison. Predict a result, then repeat with one change.

Sources: Visit · Exhibitions.

Photo: Billie Grace Ward · CC BY 2.0. Resized/compressed.