If you love baseball, Chase Field is a must! May even have the roof open too for the game
If you haven't visited the Grand Canyon, April is the perfect time! The weather is perfect and a huge change of scenery!
Havasu Falls: A stunning hike to a beautiful waterfall located near the Grand Canyon (though it requires planning and permits). Sedona: If you have time, Sedona is a beautiful place with red rock formations, just a few hours away.