Ferropolis, Mining museum and event venue in Gräfenhainichen, Germany.

Ferropolis is a mining museum and event venue in Gräfenhainichen with five enormous bucket-wheel excavators arranged in a semicircle on the grounds of a former surface mining site. The machines remain from the coal extraction operations and stand like monuments to an industrial era.

The Golpa-Nord open-pit mine closed in 1991. Architect Martin Brück's 1992 diploma thesis at the Bauhaus Dessau foundation proposed gathering the remaining machines on a remnant pillar of the pit. The site was declared a regional project for Expo 2000, and on 14 December 1995 the state economics minister unveiled the town sign. It opened to visitors in July 2000 with a gala concert conducted by Mikis Theodorakis.

The name Ferropolis combines Latin ferro and Greek polis, meaning "iron city". The open-air museum displays five machines with nicknames: the bucket-wheel excavator "Mad Max", the "Big Wheel", the spreaders "Gemini" and "Medusa", and the crawler-mounted "Mosquito". The Ferropolis Arena between the machines holds 25,000 visitors; Melt! ran here from 1999 to 2024, splash! since 2009, and since 2023 the Hive Festival. Couples can marry in the former control room.

The site is accessible by regional train to Gräfenhainichen station, and parking is available on-site. Guided tours of the machinery can be arranged throughout the year and offer insight into how the equipment operated.

The open-air museum displays five machines, each with a nickname: the bucket-wheel excavator "Mad Max", the bucket-chain excavator "Big Wheel", the spreaders "Gemini" and "Medusa", and the crawler-mounted column slewing excavator "Mosquito". The former Golpa-Nord workshops, power supply and social facilities once stood on this spot.