This November 14, Museum Night offers a truly unique opportunity. You’ll be able to step through the doors of an imposing historic building that’s usually closed to the general public—and, as if that weren’t enough, climb up to its rooftop terrace to get an up-close look at one of Buenos Aires’ best-kept secrets: the majestic Colossuses that stand guard over the city.
We’ll tell you everything you need to know to visit these legendary automatons for free and enjoy the best views of downtown Buenos Aires on the most anticipated cultural night of the year.
How to Visit the Siemens Colossi on Museum Night
Just a few meters from the Cabildo and the Casa Rosada, the former Siemens Building (now the headquarters of the CABA Judicial Council) joins Museum Night with an unmissable event. During this evening, not only will you be able to explore the hallways of this architectural gem, but you’ll also have access to a special guided tour that culminates at its highest point.
The tour, which will be accompanied by live music, takes you straight to the terrace. There, the imposing bronze sculptures known as “The Siemens Colossi” await you—two giant automatons that tower over Avenida de Mayo and that very few Buenos Aires residents have had the privilege of seeing up close.
Why it’s a must-see: The secret behind the bronze giants
The biggest draw of this exceptional opening is its exclusivity: the building doesn’t usually offer guided tours or free access to its upper floors.
The Colossi were originally installed in the 1930s by the German company Siemens at its iconic headquarters on Avenida de Mayo and Julio A. Roca. The building stands out for its rationalist-style façade, foreshadowing the industrial modernity of the era. Perched atop its monumental clock, these two bronze figures—each over three meters tall—were designed with a clear purpose: to strike a massive bell every hour with their heavy hammers.
Although the original mechanism was silenced to preserve the structure, the automatons are still there—immense and legendary—serving as the eternal guardians of Buenos Aires.
Don’t miss the chance to take photos of them and marvel at the details of these works of industrial art. Remember that this special opening is exclusively on November 14, so plan your route and arrive early.
The activities you’ll find during your visit to The Colossuses on November 14
Here are the activities scheduled for this truly unique night:
👉9:30 p.m. – Terrace tour: “The Colossi” monument and live music.
👉Continuous schedule – Tour of the Plenary Hall and audiovisual presentation on the City’s Justice System and the main policies promoted by the agency.
👉Continuous screening – Screening of the short documentary “30 Years Since the Enactment of the Constitution of the Autonomous City of Buenos Aires.”
If you’re planning your itinerary for this year’s Museum Night, take note of these key details:
- 📍 Where: CABA Judicial Council (Former Siemens Building) – Av. Presidente Julio Argentino Roca 530, CABA (Monserrat).
- 🗓️ When: Saturday, November 14.
- 🕔 Hours: 7:00 p.m. to 2:00 a.m.
- 🎟️ Admission: Completely free.
- ⚠️ Admission: Strictly on a first-come, first-served basis; no prior registration required.
