Connie Mack (1862-1956)

Philadelphia, PA · est. 2008

When it opened in 1908, the Walnut Lane Bridge was hailed as an engineering marvel — the world's largest concrete arch bridge at a moment when reinforced concrete was still a novel gamble. Reformers praised its blend of utility and grace as it linked Germantown and Roxborough, shrinking a half-day trip to minutes and quickening trade and neighborly ties. More than a century later it remains a working artery of the city.

Philadelphia, PA

David Rittenhouse (1732–1796) was one of early America's foremost men of science — an astronomer, clockmaker, and instrument builder who won fame for observing the 1769 transit of Venus and later served as the first director of the United States Mint. This sundial marks the site of his birth and honors his mastery of astronomy and horology, the precise measurement of time. A self-taught Pennsylvanian, he embodied the Enlightenment ideal of the patriot-scientist.

Philadelphia, PA · est. 1991

In 1690 William Rittenhouse, the first Mennonite minister in America, built the English colonies' first paper mill along the Wissahickon Creek. Generations of his family expanded the operation, turning this valley into the birthplace of American papermaking. By the 1850s the village had grown to more than forty buildings, seven of which still survive from this once-thriving industrial hamlet. It was also the birthplace, in 1732, of the noted astronomer and instrument-maker David Rittenhouse.

Philadelphia, PA · est. 2025

Wyck sheltered nine generations of a single Quaker family whose interests ranged across science, education, glassmaking, horticulture, and brewing. The oldest part of the house dates to 1690, and in 1824 the noted architect William Strickland reshaped the 1720s dwelling into the home that stands today. In 1821 Jane Bowne Haines laid out a rose garden that grew to hold more than fifty rare cultivars, among the oldest surviving gardens of its kind in its original plan.