What set Levittown apart from other developments at the time was that it was built as a complete community. Levitt & Sons designed neighborhoods with traffic-calming curvilinear roads, in which there were no four-way intersections. Each neighborhood had within its boundaries a site donated by Levitt & Sons for a public elementary school. Locations for churches and other public facilities were set aside on main thoroughfares such as the Levittown Parkway, likewise donated by the builder to religious groups and other organizations. Other amenities included Olympic-sized public pools, parks, "greenbelts", baseball fields and playgrounds, and a shopping center located in neighboring Tullytown borough that was considered large and modern at the time of its construction (and in fact was the largest east of the Mississippi). The first set of four sample homes were put on display in a swatch of land near the future Levittown Shop-a-Rama, and an estimated 30,000 people viewed them in that first weekend.