We did the tour of Karl Marx Allee with Martina. Our tour guide offered a comprehensive, engaging, and entertaining verbal history of the street accompanied by various photos and architectural details. The tour is especially great for people visiting Berlin with niche architectural interests, or anyone living in the city wanting to learn about a small corner of its history. As we live in the city, we’re not so interested in fast-paced hop on/hop off tours, and this one certainly scratched our itch!