$1000: Yorba Linda
John F. Kennedy
Martin Van Buren
My trip to Boston got me about 3 miles away (I did get to the JFK Presidential Library and Museum, though). Haven't been to any of the others.
Remembering the the Western White House might throw one off, or ar least slow one down. It was in San Clemente, not Yorba Linda. I have been to the birthplace and library. I also spent a Saturday afternoon recreating on the beach at a Coast Guard facility next to the WWH. This would have been late '70s or early '80s when the Nixons wete still there.