The Shrine of Our Lady of Gudadulupe is a great example of a beautiful church of recent construction. In addition to its fine architecture, the Shrine also has some lovely paintings of mostly recent saints, including St. Gianna, St. Maria Goretti, and Blessed Miguel Pro. (Regrettably, I did not have the opportunity to take photos of these, but the Shrine's website has many here.)
St. John Cantius in Chicago is also very beautiful and is known for its beautiful liturgies, many in the Extraordinary Form.
But the Basilica of St. Josaphat! This I was not expecting. I only went there out of curiosity because it looked so large from the highway. It is simply stunning! And it has been so beautifully restored. Every corner of this wonderful church is awe-inspiring: the dome, the baldacchino, the windows, the side altars, the stations. If you're every driving through Milwaukee, you simply must stop here, and it's right off I-94. (Sorry my exterior photos are so bad, but it was raining.)
