Plovdiv reached an agreement that the Principality of Bulgaria and Eastern Rumelia had a common government, Parliament, administration, and army. Today 6 September is celebrated as the Unification Day and the Day of Plovdiv. After the unification, Plovdiv remained the second most populous city in Bulgaria after the capital Sofia. The first railway in the city was built in 1874 connecting it with the Ottoman capital, and in 1888, it was linked with Sofia. In 1892 Plovdiv became host of the First Bulgarian Fair with international participation which was succeeded by the International Fair Plovdiv. After the liberation, the first brewery
Plovdiv Peak km north of M'Kean Point and (Bulgarian mapping in 2005 and 2009). Plovdiv Peak Plovdiv Peak (Vrah Plovdiv \'vr&h 'plov-div\) is a peak rising to 1,040 m in the east extremity of Levski Ridge, Tangra Mountains, Livingston Island in the South Shetland Islands, Antarctica. The peak overlooks Magura Glacier to the south and Iskar Glacier to the north-northeast. The peak was named after the Bulgarian city of Plovdiv. The peak is located at , which is 3.15 km east-northeast of Great Needle Peak (Pico Falsa Aguja), 1.17 km east of Helmet Peak, 3.48 km south of Yana Point, 780 m