Oooh interesting read I'll split this list in countries

Mexico:
-Chihuahua (My current home)
-Cd. Juarez (Border city with the US)
-Cuauhtémoc
-Creel (Where the awesome Copper Canyon is)
-Aldama (Home of the Uncle Albert's Cabanas and water park xD)
-Delicias
-Durango
-Monterrey (A major city in Mexico, and a great place to visit for concerts)
-Torreón
-Saltillo
-Guanajuato
-Aguascalientes
-Guadalajara
-Mazatlán (A seaside city I've been going to countless of times during my childhood)
-Puerto Vallarta (I have so many lovely memories from my trip with KS there ^^)
-Manzanillo (Another seaside city from my childhood, really relaxing place)
-Cancún
-Playa del Carmen (Simply the best beach in Mexico, rich in Mayan culture history and celebrations. Also a place full of good memories with KS )

U.S.
-El Paso, TX (Border city with Mexico, I've been going there ever since I have memory :P)
-San Antonio, TX
-Ruidoso, NM (Great place to ski)
-Santa Fe, NM
-Carlsbad, NM
-Durango, CO
-Pagosa Springs, CO (Both this and Durango are awesome places for skiing)
-Tucson, AZ
-Phoenix, AZ
-Las Vegas, NV
-Los Angeles, CA
-Orlando, FL

Poland:
-Poznan (I lived there for 10 months during 2004-2005)
-Warsaw
-Krakow (Awesome castle, and full of so much history. It's also close to the old Auschwitz concentration camp)
-Wroclaw
-Zakopane (Where I celebrated New Year 2005. Also where I tried hot red wine for the first time, excellent for the cold. Yay good memories xD)
-Lublin

Germany:
-Berlin
-Essen (Yes Nathalie, I've also been in Essen, nice place ^^. A friend of mine lives there, so I went to visit her during the year I lived in Poland)

Switzerland:
-Bern (An exchange student who came here for a year lives there, she stayed at my house for a while in exchange for my sister when she went on her exchange year to France. So I went to visit her too after visiting my friend in Essen. Her family took me to ski in the Alps, an unforgettable experience ^^)
-Lucerne

Austria:
-Vienna

Hungary:
-Budapest

Czech Republic:
-Prague (Awesome city, but my camera was stolen there then )

Slovakia:
-Bratislava

Norway:
-Oslo
-Hønefoss (Yet another exchange student that came here I went to visit xD)

Spain:
-Barcelona (My cousin lived there for many years, and invited me to go to his place once)

UK:
-Doncaster (Where mah KS lives ^^<3)
-London (Where I lost my TLKoB virginity xD)
-Manchester
-Coventry (Where I got to meet This Land, Kanu, and Stu )
-Sheffield
-Nottingham
-Whitby
-Liverpool
-Edinburgh (Scotland)
-Fort Augustus (Scotland, where Loch Ness is. Many lovely memories from that trip ^^)

Places I'd like to visit: (Sooo many, but I'll name a few)
-Kenya (I won't die without having gone to a real Safari xD)
-Egypt
-Brazil
-Perú (Machu Picchu, of course!)
-Australia
-New Zealand (LotR locations, yeah! xD)
-Japan
-Mexico City (Yeah, it's ironic that I've never really been in Mexico City :P maybe once when I was a toddler though)
-And many other places I can't think of right now....