Hannover Veranstaltungs GmbH (HVG)

In the page's words:

Hannover Veranstaltungs GmbH (HVG) is a wholly-owned subsidiary of Hannover Marketing & Tourismus GmbH (HMTG) and is responsible for the Maschsee Festival, the International Fireworks Competition in the Herrenhausen Gardens, the Old Town Flea Market on the Hohe Ufer, the Old Town Children's Flea Market at the Ballhof, the tower ascents with the arched elevator in the New Town Hall, the Glitterbox in the Hannover Congress Centrum (HCC) and the rental of the Maschsee Pavilion.