
Mayday
Dortmund · Westfalenhallen · Indoor large-scale dance event (annual) · Techno · Next: 2027-04-30–2027-04-30
A dance event centered on techno and trance, held for one night on the eve of May Day at Westfalenhallen in Dortmund (the Westfalenhalle, an indoor hall the official site calls the "Arena"). It has run since the 1990s.

