This was simply great. The tunnels were a fun activity to explore, not too physical (a bit tougher to crouch-walk when you're 6' 4" but still easily done) as you went through them. Max's English was perfect and he was very knowledgeable about the Kyiv underground. The second aspect of the trip at the Cold War Bunker was superb. It was Untouched and real history surrounding you instead of in an exhibition behind a glass case. Highly recommend if you're visiting Kyiv.