Tropentag 2023:

Competing pathways for equitable food systems transformation:
trade-offs and synergies

September 20 - 22, 2023
organised by
The Leibniz Centre for Agricultural Landscape Research (ZALF), Germany
in cooperation with
Humboldt-Universität zu Berlin, Germany


Friday, 22th September 2023. Each tour cost EUR 5.-

The excursions are already fully booked. Remaining places can be booked on site until Wednesday (Sept. 20) evening 19:00 h.

Guided tour at the project 'Weltacker Berlin'

On the world acre tour you will be guided over the 2000 m2 and you will be explained all the crops that you can discover with us. The guide will respond to your needs and guide you through the fields in an age-appropriate way, generally dealing with questions of resources and land as well as the connections between agriculture and climate.

The 'Weltacker' is located in the parc 'Botanischer Volkspark Blankenfelde-Pankow'. On the grounds of what was once Berlin's largest school garden, the Blankenfelde-Pankow Botanical People's Park offers 34 hectares of listed buildings and gardens dating from the beginning of the 20th century, surrounded by valuable natural forests and meadows. In the Botanical People's Park, visitors can expect a diverse plant community with many endangered species. The park gathers thousands of partly rare plants, herbaceous perennials and plants that have been brought together over the years, for example in the Southeast European Forest and the Small Arboretum. In addition to nature, the show greenhouses in the park, the geological wall, the arboretum and the Bauerngarten are particularly worth seeing.


  • Meeting point: main entrance of the Seminar Building (conference venue), Dorotheenstrasse 24, 10117 Berlin
  • Meetring time: 13:45 h
  • Start time: 14:00 h
  • Transportation by chartered bus
  • Guided tour through Weltacker: 15:15 pm - 17:00 h
  • Return to the conference venue via chartered bus (departure 17:30 / arrival approx. 18:15 h) Alternatively, you can stay on site and return by public transportation.
  • Costs: EUR 5.- (donation for the 'Weltacker' project) & ticket for the public transportation, which has to be paid by yourself
  • Address of the 'Weltacker': Blankenfelder Chaussee 5, 13159 Berlin (Located in the 'Botanischer Volkspark Blankenfelde-Pankow')

About 'Weltacker' ('world acre')
If we divide the world's arable land by the number of people on earth, each person receives 2000 m2. That is the share of arable land to which we are all arithmetically entitled. Wheat for bread, potatoes, cabbage, carrots, corn and soybeans for animal feed, sugar beets for sugar in tea or coffee, cotton for T-shirts, sunflowers for cooking oil, and rapeseed for biodiesel all have to grow on this land.

How will we feed ourselves tomorrow? It's a question of surface area: each person gets 2000 m2 if we divide the global arable land equally. With the 2000 m2 world acre, we convey a sense of one's own role in global agriculture.

In Berlin-Pankow the 2000 m2 Project is cultivating the agricultural arable crops of the world in the same proportions that they occur around the world - the whole world in one field. In so doing, we are demonstrating imbalances in global cultivation and finding alternatives together.

Further information:

Guided tour 'Colonial Presence' at 'Ethnologische Museum' and the 'Museum of Asiatische Kunst' (Humboldt-Forum)

Humboldt Forum Berlin

Since its foundation stone was laid, the Humboldt Forum has accompanied the debate on the topic of colonialism. Using selected objects from the 'Ethnologische Museum' and the 'Museum of Asiatische Kunst', visitors dealt with the issues of provenance, the restitution of cultural assets and the effects of colonialism on our society today.
After the guided tour you can discover the exhibition by yourself until the museum closes at 18:00 h.


  • Meeting point: main entrance of the Seminar Building (conference venue), Dorotheenstrasse 24, 10117 Berlin
  • Start time: 14:30 h
  • Walking distance from the conference venue approx. 11 minutes / 1.0 km
  • Guided tour: approx. 15:00-16:00 h (duration 60 min)
  • Afterwards you have the opportunity to discover the exhibition by yourself.
  • Costs: EUR 5.-
  • Language: English

About 'Ethnologische Museum' and the 'Museum of Asiatische Kunst'

With around 20,000 exhibits on 16,000 square metres, the collections of the Ethnologisches Museum and Museum fuer Asiatische Kunst of the Staatliche Museen zu Berlin, as well as six temporary exhibitions, offer a diverse view of past and present cultures of Africa, America, Asia and Oceania. The new presentation, which was developed in many areas in cooperation with communities from the various regions of the world, raises pressing questions about the origin of the objects, the conditions under which they were collected and the effects of colonialism up to the present day.
Further information: