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Places I've been

Places this traveler has marked as been there.

A researcher performing an experiment on animal nutrition using the Armsby Respiration Calorimeter in the early 1900s.

College Township, Pennsylvania

The Armsby Calorimeter

This 19th century machine put animals (including humans) in boxes to study how they metabolized calories.

Penn's Cave Exit

Spring Mills, Pennsylvania

Penn's Cave

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.