The first hospital, the first medical school, the first medical society, and abundant Civil War casualties, all combined to establish the most important medical center in the country. It's still the second largest industry in the city.
City of Rivers and Rivulets
Philadelphia has always been defined by the waters that surround it.
Revolutionary Philadelphia's Patriots
All kinds of people were patriots in 1776, and many of them were all mixed up about what was going on and how they stood. Hotheads in the London Coffee House stirred up about an inoffensive Tea Act, Scotch-Irish come here to escape the British Crown, the local artisan class and the local smuggler class, unexpectedly prospering under non-importation, and the local gentry -- offended to be denied seats in Parliament like other Englishmen. Pennsylvania wavered until Ben Franklin stepped forward with a plan.
Touring Philadelphia's Western Regions
Philadelpia County had two hundred farms in 1950, but is now thickly settled in all directions. Western regions along the Schuylkill are still spread out somewhat; with many historic estates.
The Main Line
Like all cities, Philadelphia is filling in and choking up with subdivisions and development, in all directions from the center. The last place to fill up is the Welsh Barony, a tip of which can be said to extend all the way in town to the Art Museum.
Montgomery and Bucks Counties
The Philadelphia metropolitan region has five Pennsylvania counties, four New Jersey counties, one northern county in the state of Delaware. Here are the four Pennsylvania suburban ones.
A mile or two south of Pottstown, the Schuylkill River encounters a rocky ridge several hundred feet high, and makes a bend around it. The first Treasurer of the United States, Michael Hillegas, built a colonial mansion on the point of the bend, and it has been lovingly restored and preserved by a noted Philadelphia surgeon and his wife. Alexander Hamilton, the first Secretary of the Treasury under the Constitution, has his picture on the modern version of a ten-dollar bill. So it is appropriate that Hillegas, the first Treasurer under the Articles of Confederation, had his picture on many versions of a ten-dollar gold note, back in the days when the American dollar was as good as gold. River Bend Farm is not only colonial, charming and maintained in mint condition, it is tucked away between the bend in the river and the high ridge to one side, giving it seclusion and privacy.
A high ridge near a river is unfortunately also an ideal place to build a nuclear power plant, and that's where the Limerick plant now looms up, glowing at night, occasionally making faint humming noises. There's a limited-access highway from Philadelphia to Reading which swoops up the valley, and the two high cooling towers of Limerick dominate the landscape for twenty miles. Because of the river bend, you aim straight for those towers for a long time before you swerve off, and the view is much like that from the bomber cockpit of the final scene in the movie "Dr. Strangelove". It gets your attention harmlessly, but it's hard to ignore. In spite of all sorts of official reassurance, everybody knows about Three-Mile Island, and Chernobyl, but few people emphasize there has never been a single injury from an American nuclear plant.
So, in 1981, everybody was ready to go into orbit when a worker named Watrus showed up for work at the nuclear plant, and set off all manner of clanging alarms from radioactivity detectors. Panic and pandemonium for weeks, until a remarkable phenomenon was discovered. Watrus wasn't radioactive from the nuclear plant at all, but from having his work clothes laundered in his own basement. It slowly developed that radon gas seeps through the ground in many places in the United States, particularly over rocky ground. The gas then rises into the basement of houses and gets trapped. The more tightly the storm windows are applied and the more carefully sealed the seams of the house, the harder it is for the radon to escape. The Pennsylvania Dutchmen who live around Limerick are a little skeptical of this story, and are not inclined to live any closer to the power plant than they have to. They are just as much in favor of oil self-sufficiency as any one else, but still, no one likes being close to it.
The big winners from all this confusion are the people with radiation detectors, who go around the country testing people's basements for radon, for a fee. But unless you are willing to go live on the Sahara Desert, it isn't easy to see where you are going to go to avoid radon.