
The area was then surrounded by residential buildings. The army gave up the Exer as a parade ground in the late 19th century. A tree descending from the old poplar, grown in a plantation in Dresden, surrounded by aspen trees now stands on its place. The demonstration is today marked by a memorial stone on the site. Up to 20,000 people gathered near the Lonely Poplar in front of Schönhauser Tor to demand voting rights, a 12-hour work day, minimum wages and public, rather than private or religious, schools from Prussian king Friedrich Wilhelm IV. The first demonstrations in Berlin during the revolution of 1848 took place at the site on 26 March 1848. Its landmark was a solitary black poplar known as the "Lonely Poplar" ( German: Einsamen Pappel), which was standing on the parade ground near the corner of Topsstraße and Cantianstraße. The site was also known as the "Place by the Lonely Poplar" ( German: Platz an der Einsamen Pappel). Memorial stone for the demonstration on 26 March 1848. "Exer" is derived from the German word Exerzierplatz, meaning "Parade ground" or "Drill ground". The site got the nickname "Exer" from the military use. The site became the parade ground of the 1st (Emperor Alexander) Guards Grenadiers, after the Prussian military had acquired the area from Christian Wilhelm Griebenow in 1825. The site was used by Prussian Army, before it was turned into a sports facility.


Friedrich-Ludwig-Jahn-Sportpark was the venue for the 2018 World Para Athletics European Championships. Currently, the main tenants of the stadium are VSG Altglienicke and Berlin Thunder. The stadium is the third-largest stadium in Berlin, after the Olympiastadion and the Stadion An der Alten Försterei, with a capacity of approximately 20,000 seats, of which 15,000 are covered. The main building is the Friedrich-Ludwig-Jahn-Stadion. The sports complex covers an area of approximately 22 hectares and comprises several facilities. The Friedrich-Ludwig-Jahn-Sportpark is a multi-purpose sports complex located in the western part of the locality of Prenzlauer Berg in the borough of Pankow in Berlin.
