My husband and I and our two teenage sons spent five hours with George exploring some of the less touristy neighborhoods of Athens. We learned about modern Greek politics by seeing neighborhood sites and street art (i.e., graffiti). George was incredibly knowledgeable and was able to make the tour as interesting for our sons as it was for the adults. As one of our kids said afterwards, "I wasn't bored for the entire time" -- somewhat of a miracle for a teenager, and truly a testament to how engaging George was! George also made sure that we got to stop and eat and drink in off-the-beaten path but truly delicious places.