This document is a comparative analysis essay on Rittenhouse Square in Philadelphia and Petaling Street in Kuala Lumpur. It summarizes Jan Gehl's theories on necessary, optional, and social activities that take place in public spaces. It then compares the two locations based on these activities, types of contact points, and varying degrees of contact intensity. Rittenhouse Square caters more to optional and social activities with its parks and outdoor restaurants, while contact in Petaling Street is mostly limited to its markets. Overall, the document analyzes how urban design in each location influences public life and human interaction.