Things to do
Six honest picks. Not sixty.
From Wikipedia + OpenStreetMap. No affiliate links, no crowd bias.
Fairmount Water Works
The Fairmount Water Works in Philadelphia, Pennsylvania, was Philadelphia's second municipal waterworks. Designed in 1812 by Frederick Graff and originally finished in 1815, it operated until 1909, winning praise for its design and becoming a popular tourist attraction. It now houses a restaurant and an interpretive center that explains the waterworks' purpose and local watershed history. It was designated a National Historic Landmark in 1976 for its architecture and its engineering innovations. It was the nation's first water supply to use paddle wheels to move water.
Wikipedia → Liberty Bell
The Liberty Bell, previously called the State House Bell or Old State House Bell, is an iconic symbol of American independence located in Philadelphia. Originally placed in the steeple of Pennsylvania State House, now known as Independence Hall, the Liberty Bell today is located across the street from Independence Hall in the Liberty Bell Center in Independence National Historical Park.
Wikipedia → Independence Hall
Independence Hall is a historic civic building in Philadelphia, Pennsylvania, where both the Declaration of Independence and the Constitution of the United States were debated and adopted by the Founding Fathers of the United States. The building, which is the centerpiece of Independence National Historical Park, was designated a World Heritage Site in 1979. It is an example of American Georgian architecture, which is characterized by symmetry, classical proportions, and exposed brick with stone masonry accents.
Wikipedia → USS New Jersey
USS New Jersey (BB-62) is an Iowa-class battleship and the second ship of the United States Navy to be named after the U.S. state of New Jersey. She was often referred to fondly as "Big J". New Jersey earned more battle stars for combat actions than the other three completed Iowa-class battleships, and was the only US battleship used to provide gunfire support during the Vietnam War.
Wikipedia → Congress Hall
Congress Hall, located in Philadelphia at the intersection of Chestnut and 6th Streets, served as the seat of the United States Congress from December 6, 1790, to May 14, 1800. During Congress Hall's duration as the capitol of the United States, the country admitted three new states, Vermont, Kentucky, and Tennessee; ratified the Bill of Rights of the United States Constitution; and oversaw the presidential inaugurations of both George Washington and John Adams.
Wikipedia → Loews Philadelphia Hotel
The PSFS Building, also known as the Loews Philadelphia Hotel, is a skyscraper in Center City, Philadelphia, Pennsylvania. The building, the first International Style skyscraper constructed in the United States, was designed by architects William Lescaze and George Howe, was built for the Philadelphia Saving Fund Society. The skyscraper's design was a departure from traditional bank and Philadelphia architecture, lacking features such as domes and ornamentation. Combining Lescaze's experience with European modernism, Howe's Beaux-Arts background and the desire of Society President James M. Wilcox for a forward-thinking, tall building the skyscraper incorporated the main characteristics of International style architecture. The building is listed on the National Register of Historic Places as a National Historic Landmark.
Wikipedia → 
