I from (and live in) Northern California... I get around the bay area and central valley quite a bit, and the Tahoe area. I've been to Reno, Vegas, Phoenix, Houston, Ann Arbor, Chicago (and Evanston), Boston (I spent a summer at Tanglewood in Lenox), NY, New Brunswick NJ... and that's about it for the US.
I've travelled in Europe a few times (for "work"). I've been to Moscow and St Petersburg, Vilnius (Lithuania), Ireland (Limerick, Cork, and Dublin), Paris, around various places in Normandy, Lyon, Berlin, Munich, Stuttgart, Villach, Vienna, Prague, Amsterdam, Zandvoort, KÃ¶ln, Nuremberg.... and I know I'm forgetting a few. Given that my trips to Europe have all been on working orchestra tours, I've had varying amounts of free time to explore those places, but I've spent the most time in the more obvious places like Vienna, Paris, Dublin, and Munich.