The Royal Chapel of King Louis XIV. Enormous is scope, the entire complex is one of the most impressive I have ever seen. Multiple palaces (for the mistresses of the King mainly) and grounds complete with their own Venetian style canals and an Orangerie. The Sun King was perhaps nearly revered as a god among men, and requisite with this theme is a lack of Christian symbology anywhere in the multiple palaces, with the notable exception of the Royal Chapel.
Unitarian Church in Charleston, South Carolina. Originally built in 1772, the style is referred to as English Perpendicular Gothic Revival. In 1886 an earthquake struck and demolished the church's top tower. The new tower was built to ensure that stability to the building was maintained. The church was challenged again when Hurricane Hugo hit. The roof was lost, but repairs used the specifications from over 100 years prior. In 1973 the church was declared a National Historic Landmark.