

Indoor Foucault pendulum in historic Montbéliard—photograph the sweeping arc and base markings that visualize Earth's rotation. Best visited during weekdays when interiors are quiet; check site opening hours and possible entry/collection halls. Soft indoor light favors long exposures; small city-centre parking and public transport nearby. Respect any no-tripod rules and the educational context of the installation.


Indoor Foucault pendulum in historic Montbéliard—photograph the sweeping arc and base markings that visualize Earth's rotation. Best visited during weekdays when interiors are quiet; check site opening hours and possible entry/collection halls. Soft indoor light favors long exposures; small city-centre parking and public transport nearby. Respect any no-tripod rules and the educational context of the installation.