OLD CITY. Built in the mid 1700s, this Georgian-style house was owned by the Widow Lithgow, who rented rooms in it to Betsy Ross and her husband, from 1773-1786. They ran an upholstery business out of this house, and in 1776, Betsy sewed the first US flag here. Fully restored in the 1930s, today the house is one of Philadelphia's most visited attractions. Betsy Ross is buried in the adjacent courtyard. The gift shop offers Betsy memorabilia and flag souvenirs, books, and toys.

OLD CITY. Most people recognize Carpenters' Hall as the site of the first Continental Congress, but this early 1700s building has a lot more history. It housed Ben Franklin's Library Company and his American Philosophical Company, as well as banks, an auction house, a music school, and the Franklin institute. The first US bank robbery happened at Carpenters' Hall in 1798, and it was the first privately owned building to be opened to the public as a historical monument. Very interesting exhibits explore the entire history of the building and the Carpenters' Company.

OLD CITY. This cemetery is a veritable who's who of early America. Benjamin Franklin is buried here, along with four other signers or the Declaration of Independence. Wander through the cemetery, and you'll also spot markers for historic leaders in the fields of medicine, politics, and academics. The tradition of tossing a penny through the formerly locked gates to honor Franklin continues, and informative walking tours of the site are offered daily.

OLD CITY. You can stroll through Franklin Court to get to the Christ Church, which was the place of worship for George Washington, Betsy Ross and Benjamin Franklin. Still in use today, the late 1700s building is considered one of the finest examples of Georgian architecture in the country. Historical talks and tours of the church and burial ground are offered daily.

MUSEUM DISTRICT & FAIRMOUNT PARK. The most expensive and advanced prison of its time, Eastern Pen opened in 1829. It used the then-revolutionary concept of solitary cells that permitted no contact whatsoever among prisoners, and although physical punishment was used much less frequently than at some other prisons, when prisoners broke the rules they would still be subjected to various tortures like the water bath and the iron gag. The place was shut down in the 1970s, but is today a National Historic Landmark and major tourist attraction. Special themed tours are offered throughout the day, along with the annual "Terror Behind the Walls" tour. Children under age seven are not permitted.