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Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., and the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Since 1854, the city has been coextensive with Philadelphia County, the most populous county in Pennsylvania and urban core of the Delaware Valley, the nation's seventh-largest and one of world's largest metropolitan regions with 6.245 million residents in 2020. The city's population at the 2020 census was 1,603,797, and over 56 million people live within 250 mi (400 km) of Philadelphia.

Philadelphia was founded in 1682 by William Penn, an English Quaker. The city served as capital of the Pennsylvania Colony during the British colonial era and went on to play a historic and vital role as the central meeting place for the nation's founding fathers whose plans and actions in Philadelphia ultimately inspired the American Revolution and the nation's independence. Philadelphia hosted the First Continental Congress in 1774 following the Boston Tea Party, preserved the Liberty Bell, and hosted the Second Continental Congress during which the founders signed the Declaration of Independence, which historian Joseph Ellis has described as "the most potent and consequential words in American history". Once the Revolutionary War commenced, both the Battle of Germantown and the Siege of Fort Mifflin were fought within Philadelphia's city limits. The U.S. Constitution was later ratified in Philadelphia at the Philadelphia Convention of 1787. Philadelphia remained the nation's largest city until 1790, when it was surpassed by New York City, and served as the nation's first capital from May 10, 1775, until December 12, 1776, and on four subsequent occasions during and following the American Revolution, including from 1790 to 1800 while the new national capital of Washington, D.C., was under construction.

With 18 four-year universities and colleges, Philadelphia is one of the nation's leading centers for higher education and academic research. As of 2021[update], the Philadelphia metropolitan area was the state's largest and nation's ninth-largest metropolitan economy with a gross metropolitan product (GMP) of US$479 billion. The city is home to five Fortune 500 corporate headquarters as of 2022. The Philadelphia skyline, which includes several globally renowned commercial skyscrapers, is expanding, primarily with new residential high-rise condominiums. Philadelphia and the Delaware Valley are a biotechnology and venture capital hub; and the Philadelphia Stock Exchange, owned by NASDAQ, is the nation's oldest stock exchange and a global leader in options trading. 30th Street Station, the city's primary rail station, is the third-busiest Amtrak hub in the nation, and the city's multimodal transport and logistics infrastructure, including Philadelphia International Airport, the PhilaPort seaport, freight rail infrastructure, roadway traffic capacity, and warehouse storage space, are all expanding.

Diqing Tibetan Autonomous Prefecture, one of the eight autonomous prefectures in Yunnan Province, is the capital of Shangri-La. Tibetan means "auspicious place". It is located in the northwest of Yunnan Province, at the junction of Yunnan, Tibet and Sichuan provinces, the Hengduanshan vein longitudinally arranged in the north and south of the Qinghai-Tibet Plateau, and the hinterland of the Jinsha, Lancang and Nujiang parallel rivers. The Lancang River and Jinsha River run through the whole territory from north to south, covering a total area of 23870 square kilometers. Diqing Tibetan Autonomous Prefecture manages one county (Deqin County), one autonomous county (Weixi Lisu Autonomous County) and one county-level city (Shangri-La). There are 26 ethnic groups in Diqing, including Tibetan, Lisu, Han, Naxi, Bai, Hui, Yi, Miao and Pumi, with more than a thousand people. Shangri-La, Diqing Tibetan Autonomous Prefecture, is located on the southern edge of the Qinghai-Tibet Plateau.
Travel Guides In Diqing Tibetan Autonomous Prefecture
Travel Sights In Diqing Tibetan Autonomous Prefecture
Travel Notes In Diqing Tibetan Autonomous Prefecture
The most complete guide for hiking in Niru Village, hundreds of pictures and nearly 10,000 words tell you how beautiful the last secret place is!
foreword The hustle and bustle of society, the busy pace of life, and the ever-increasing material life seem to be beautiful and happy, but they alway
Shangri-La, Yunnan. The Shangri-La of the world, travel with Youyou (touring the east ring road of Shangri-La, it is enough to bring this book)
【sequence】 The Shangri-La of the world, my ten-year appointment Always remember, there will be reverberations... "Shangri-La" is an eternal, peaceful
Drunk Beauty Colorful Yunnan Free Travel 7-Day Tour Guide
Yunnan is so beautiful, it is very suitable for people who like to take pictures, and when you go there, you will know what is the unity of people and
2020 Yunnan-Guizhou-Sichuan 51-Day Self-Driving Autumn Travel Notes (6)--Shangri-La Lijiang
51-day self-driving autumn travel notes in Yunnan, Guizhou and Sichuan in 2020, divided into 10 articles: (1)--Zigong chapter of Chishui Luzhou, Maota
Travel Asks In Diqing Tibetan Autonomous Prefecture
Travel Asks In Diqing Tibetan Autonomous Prefecture