Budapest is the largest city and the capital of Hungary. It is a place with rich historical past and with several scientific, economical, artistic events in the heart of Middle Europe. Budapest became one large city in 1873 after the unification of three towns: Buda and Óbuda on the west bank and Pest on the east bank of the Danube river. Buda was built upon hills, while Pest lies on lowlands.
About 2000 years ago the Romans called this settlement Aquincum, which meant "city of waters". The reason for this might be the fact that there were and still there are lots of water springs and thermal water baths in this region. Today Budapest is a busy metropolis with a population of 2 million people. The city is rich in historical and cultural monuments, works of art and natural beauties.
Budapest is often cited as one of the most beautiful cities in Europe, Budapest's extensive World Heritage Site includes both banks of the Danube, the Buda Castle Quarter, Andrassy Avenue, Heroes' Square and the Millennium Underground Railway, the second-oldest metro line in the world. It has around 80 geothermal springs, the world's largest thermal water cave system, second largest synagogue, and third largest Parliament building. The city attracts about 4.4 million tourists per year, making it the 25th most popular city in the world, and the 6th in Europe.