A thousand years later, in the time of King Matthias Corvinus, it was a wooded hunting preserve, although many Romans ruins remained (and can still be seen there).

Its importance grew again in the 19th century, when Count István Széchenyi established the Óbuda Shipyard.

[2] Roman perimeter walls were first found in 1836, when the Otter Bay dredges deepened the shipyard.

The former shipyard area was found at Hadrian's Aquincum of the Roman governor's palace, which was uncovered and presented to wait.

In 1973, for the centennial of the Óbuda-Pest-Buda union, "May the 9th Park" was created, requiring the use of 18,000 m3 (640,000 cu ft) of soil.

[3] After the fall of the Communist government, there were no longer any organized camps for musicians to meet up and play; hence a music festival was proposed as a way to bridge this gap.

The festival was started in 1993, originally called Diáksziget (Students' Island) and was organized by Károly Gerenday and Péter Müller Sziámi,[4] enthusiastic music fans, in their spare time.

The complex was supposed to feature a conference center capable of hosting 3,500 people; three five-star hotels and four apartment hotels; a spacious, American-style casino offering many different kinds of games; and an entertainment complex, including a swimming pool.