We have a 12 hour layover in PDX starting at 8:45AM. I've read a few suggestions on the forum : "OMSI, Powell's Book Store, Portland Art Museum, the food cart pods, Timbers soccer, Oregon zoo, rose gardens in Washington Park..." I'm leaning on exploring the Pearl District / Powell's Book Store or do OMSI (not really sure if we will have enough energy for this though). We will be coming from a 10 hour flight from Narita so I don't really know how wasted we will be after our flight and will probably take it as it goes when we arrive. Any other suggestions on what we should do on our layover? I don't know if we can do much walking so any suggestions where we can hang out for coffee or a few drinks in Pearl District? Will we find food cart pods within walking distance from the Powell's Book Store?