Awesome, awesome, awesome!
A modified tour to fit our four hour window was just amazing and good value for money. Sebastian, our guide, was so knowledgeable and made it so interesting. He balanced the level of information to take account of a 12 year old, 14 year old and three adults. We didn't feel guilty asking for a coffee stop - especially when my son discovered he was as knowledgeable about European football as he was about Berlin! If you want to get underneath Berlin and its Cold War history - Touriocity and Sebastian.