It's my goal in life to visit every state and 6 continents (though I'd still go to Antarctica). So far I've been to 11 states (MA, VT, NH, CT, RI, CA, OH, FL, TX, NY, NJ) and depending on your definition, 2 continents (North America and possibly South America). As long as it's safe, I'd love to visit pretty much anywhere in the world.
I'd especially love to visit:
Singapore. I always had an obsession with it, and I've done a project before on a theoretical vacation there in high school which was fun. Also I am studying Mandarin and it's one of the official languages.
Moldova. I had another similar project in high school. I'm weird and love geography, so I gave myself a challenge and chose the least visited country in Europe while everybody else chose more normal countries. I ended up convincing myself to someday go to Moldova because I think it's so interesting.