Great Mosque of Medan located 1.3km away from Swiss-Belinn Medan and can be reach by driving via Jalan Mahkamah approximately 8 minutes depends on current traffic.
Great Mosque of Medan or Masjid Raya Al Mashun is a mosque located in Medan, Indonesia. The mosque was built in the year 1906 and completed in 1909. In beginning of its establishment, the mosque was a part of the Maimun palace complex. Its architectural style combines Middle Eastern, Indian and Spanish elements. The mosque has an octagonal shape and has wings to the south, east, north and west.
At first, the Mosque was designed by the Dutch architect Theodoor van Erp who also designed The Maimoon Palace, but was then handed over to JA Tingdeman. Van Erp at that time was called to Java by the Dutch government to join in the process of restoring the Borobudur temple in Central Java. The construction required the import of different building materials such as: marble from Italy, Germany and China and the stained glass from the chandelier imported from France.
Source: https://en.wikipedia.org/wiki/Great_Mosque_of_Medan