Tours are an ideal way to learn more about a city without resorting to drastic measures such as running for mayor. Get acquainted with this Groupon.

$29 for a Yellow Fever Walking Tour for Two ($58 Value)

In 1793, an unusually damp winter and extremely hot summer filled the streets of Philadelphia with swarms of flies and mosquitoes. The year might have passed by as merely an itchy one, but for the fact that scores of refuges, fleeing war in the Caribbean, began to pour into the city, some carrying yellow fever. In the weeks that followed, the disease overtook the city with terrifying speed, killing nearly 5,000 people. The Constitutional Guided Walking Tours' Yellow Fever tour leads patrons through Philadelphia's center while illuminating familiar sites with stories and anecdotes about the epidemic. Stops include the Benjamin Rush House Site, the home of the founding father, physician, and bloodletter. Tours are scheduled for Saturdays, June 22 and July 13, as well as Sundays, July 7 and 21, with groups of up to 45 leaving at 10 a.m. and 12:30 p.m.

The Constitutional Guided Walking Tours LLC

Philadelphia's centuries-old cobblestone streets, monuments, and buildings are brimming with history—but it takes an expert to extract it. The knowledgeable guides at The Constitutional Guided Walking Tours lead visitors on journeys through areas accessible only by foot, giving an up-close perspective of America's first planned city. A variety of tours wind through such sites as Independence Mall, taking groups past landmarks including Independence Hall, Christ Church, the National Constitution Center, Declaration House, and Old City Hall. At each site, experts weave together the details of landmark events such as Thomas Jefferson's drafting of the Declaration of Independence.