The 2013 Budapest Fireworks Show launching rockets are installed and launched from 4 points in Budapest on the river Danube: there are some fireworks rockets on 3 barges in the middle of the river Danube and another bunch installed on the Chain Bridge in the city center.
You can find the map of the Budapest Fireworks Launch Rockets on the Danube, along with the two Budapest Fireworks Cruise ships & piers from where the August 20 cruises sail (Jaszai Mari Square pier and Szilagyi Dezso Square). Download the map in pdf: Budapest Fireworks Show Pdf Map