Munich’s Biggest Construction Site Opens Its Doors This Saturday

Munich Ajussi · Published: June 11, 2026 · about 2 minutes

The Marienhof open day is a rare chance to look below one of Munich’s most visible construction sites.

Marienhof sits directly behind Munich’s New Town Hall, just north of Marienplatz. The square has looked like a construction site for years. What many visitors do not see is what is being built below it: the new Marienhof S-Bahn station for Munich’s second S-Bahn core route, the 2. Stammstrecke.

On Saturday, June 13, the project team is opening the Marienhof construction site to the public for one day. Visitors can go underground, see part of the construction site below the old town, and get a better sense of how a deep station is being built in one of Munich’s most sensitive locations.

What to know

Where: Marienhof Landschaftstraße 5-7, 80331 Munich. Directly behind the New Town Hall, just off Marienplatz.
When: Saturday, June 13, 10:00 to 18:00
Last entry: 17:00
Entry: Free, no registration required
How to arrive: Use U-Bahn or S-Bahn to Marienplatz. There is no parking on site.
Accessibility: The information center is accessible, but parts of the construction site itself are not.

At street level, project staff will be available for questions. The nearby information center explains the wider 2. Stammstrecke project with a multimedia exhibition. For families, the program also includes activities for children, including construction machinery.

Worth combining

This is also the weekend of Munich’s city birthday, the Stadtgeburtstag. Events around Marienplatz and the old town make the Marienhof visit easy to combine with a slow walk through the center.

If seeing the underground section matters to you, go earlier rather than later. This is a free one-day event in the old town, and midday can easily become the busiest part of the day.

What happened when I went

Munich Ajussi’s field note I went in the afternoon. The open day itself was still running, but the underground site-tour slots had already been filled, so I could not join the tour. The official information said no registration was required, but in practice that did not mean guaranteed access to the underground section at any time of day.

If a future open day offers limited underground tours, I would arrive early rather than assume that free entry means the tour will still be available later in the afternoon.

Official source: 2. Stammstrecke München event page. City birthday program: muenchen.de. The afternoon tour-capacity note is based on my own visit.