Cleared up my list a bit, so here goes.
* ThePhantom
* Industrial Age
* St. Mark's (lvl 8 ), Castel del Monte (lvl 6), Statue of Zeus (lvl 6), Cathedral of Aachen (lvl 6), Lighthouse of Alexandria (lvl 5), Deal Castle (lvl 5), Colosseum (lvl 4), Notre Dame (lvl 3), Royal Albert Hall (lvl 1), and Saint Basil's Cathedral (lvl 1).
* Visiting at least every other day (but trying to do it everyday).
* I'd prefer the same contribution --- at least a visit every other day; you are free to skip any visits from your side if you'd like to actively contribute to my GBs, simply drop me a message to let me know.