What I’m looking at on Wikipedia, right now.

The City Beautiful Movement was a reform philosophy concerning North American architecture and urban planning that flourished during the 1890s and 1900s with the intent of using beautification and monumental grandeur in cities. The movement, which was originally associated mainly with Chicago, Detroit, and Washington, D.C. promoted beauty not only for its own sake, but also to create moral and civic virtue among urban populations. Advocates of the philosophy believed that such beautification could thus promote a harmonious social order that would increase the quality of life.

Discovered when looking at the Wikipedia page for The Manhattan Municipal Building at 1 Centre Street, one of my favorite buildings in New York.