Interesting and informative! - Martin was a very informed and enthusiastic tour guide. We learned a lot about the “underground” city. I recommend taking the tour on the front end of your trip because it really helps to acclimate you to the city. Thanks Martin!

Excellent tour of underground city - The guide Gabriella was very knowledgeable about the subject and took us all over the underground city. Good to take a drink and wear sensible shoes.

It’s all about passion, Martin - Martin made the Tour very unique. We enjoyed to follow him as a guide in Montreal. Highly professional, showing special locations like the beautiful boulevard of the Canadian banks. If we would come back to Montreal we would look for him to get him for a tour

Great tour with Tom! - Thomas our tour guide was excellent. This was a great tour. It was informative, fun and very interesting. I would highly recommend this tour and Thomas!

Surprising and useful hidden treasure - This was such an informative tour! Very helpful! I wish we had taken it on our very first day. We might have made use of the Underground more during our stay in Montreal Gabriela was very knowledgeable and answered so many questions with grace and patience. It was fun to see the surprising amount of art under and around downtown and to learn the history and the connections you could make inside this hidden treasure. Highly recommend.

Must see Underground! - Our guide Isabel was great! Full of energy and told us fun facts about Montreal. Stopped along the way to point out all changes from past years.. Very interesting!!

Great experience to see the city! - Isabelle was great. We really enjoyed our tour of Montreal! Also got great recommendations and insights on local places.

Underground walking tour - Very informative but feel the description of the tour on Viator didn’t match the experience with Martin. Martin was very knowledgeable about the underground network but based on the Viator description felt that their would be more of an artistic component to the tour.

Needs some zing. - Gabriella was good. The tour was boring at times, no reflection on her. It needs to be paired with something to give it some zing…we did the Old Montreal walking food tour a few days earlier, which was fantastic.

This tour misses the mark! - The RES network is an unbelievable collection of retail/restaurants/shopping/ transversing experiences. Unfortunately, a little more complicated than a new comer would expect—- so a tour be essential to deep dive. This tour has you spending hours in non descript passage ways — totally missing the fun of the underground!