High Root Open Air x Summer in the City
Electronic family festival at Mainz Citadel with Milk & Sugar, The Disco Boys and Tom Novy
About High Root Open Air Mainz
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The High Root Open Air is one of the most exciting innovations in the Mainz open-air calendar, combining two objectives: firstly, to bring electronic music, with its focus on House and Disco, out of the closed club space and into the urban landscape of Mainz; secondly, to make the genre accessible to a broader audience — families, weekend guests, classical concert-goers who don't necessarily frequent nightclubs.
The venue is the Mainz Citadel, whose extensive bastions and courtyards are perfectly suited for a festival that is both spectacular and family-friendly. The organizer is mainzplus Citymarketing GmbH, which has integrated the event as a central edition within the Summer in the City concert series.
The 2026 lineup reads like a best-of list of the German House and Disco scene. Milk & Sugar, the Munich DJ duo, has been a flagship of international House tracks of German origin for years. The Disco Boys, founded in Hamburg, have been a constant fixture in the German club scene since the early 2000s with countless chart hits. Tom Novy, the Munich veteran and one of the most influential names in German House, completes the DJ triumvirate. The headliners are complemented by regional acts and resident DJs from the Mainz and Rhine-Main area.
The family orientation is part of the program. Unlike purely nighttime events, admission starts at 3 PM, the program runs all afternoon, with food and drink offerings, seating, and an atmosphere between a garden party and a festival. Only towards the evening does the mood intensify towards classic DJ set energy. Afterwards, selected Mainz clubs invite you to official after-parties.
High Root Open Air Mainz — edition 2026
The exact order of DJ sets and set times will be communicated by the organizer closer to the date. The structure follows the established cornerstones of electronic open-air festivals: admission in the late afternoon with resident and warm-up sets, transition to the headliner program in the early evening, climax between 8 PM and 11 PM with Tom Novy, The Disco Boys, and Milk & Sugar in varying order, followed by a transition to after-parties in Mainz clubs.
Programme High Root Open Air Mainz 2026
Confirmed Acts 2026
- Milk & Sugar (Munich) — House
- The Disco Boys (Hamburg) — House, Disco
- Tom Novy (Munich) — House Veteran
- Further regional acts and resident DJs will be announced via summerinthecity-mainz.de
Program Structure
3 PM to 6 PM
- Admission and resident/warm-up sets
- Family-friendly open-air atmosphere at the Citadel
- Catering and seating available
6 PM to 11 PM
- Headliner sets by Milk & Sugar, The Disco Boys, and Tom Novy
- Climax of the event with a club-like atmosphere
Afterwards
- Official after-parties in selected Mainz clubs
Highlights High Root Open Air Mainz 2026
- Electronic family festival at Mainz Citadel
- Headliners: Milk & Sugar, The Disco Boys, Tom Novy
- Open-air atmosphere from 3 PM
- After-parties in Mainz clubs
- Ticket €29.90
Prices High Root Open Air Mainz 2026
Practical information — High Root Open Air Mainz
Location and Travel
Mainz Citadel, Auf der Bastion Drusus, 55131 Mainz. Accessible from the main train station in about 25 minutes on foot or by bus. Public transport or walking is strongly recommended — parking spaces are very limited.
Date and Admission
Friday, June 26, 2026, admission from 3 PM.
Tickets
€29.90 via summerinthecity-mainz.de, Reservix, and Adticket. Tickets are transferable; re-entry after leaving the premises is generally permitted.
After-Party
Selected Mainz clubs will host official after-parties afterwards. Details will be announced via the festival channels.
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Travel to this festival
Reserva tu tren o autobús para llegar a High Root Open Air Mainz al mejor precio.
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