Landmarks around the nation on Thursday night were lit purple to help celebrate Spirit Day.

The 4th annual Spirit Day supports efforts to combat the bullying of LGBT teens.

Bright purple lights shined on the New York Stock Exchange's magnificent columns and 16 foot high pediment with symbolic figures, flooding two-thirds of the iconic building in purple.

San Francisco City Hall, a Beaux-Arts beauty with a 307-foot high dome, also took on a purple tint on Thursday night.

In Los Angeles, the LAX Pylon Lights shined purple for airline passengers landing into the city to view.

Other landmarks also participated, including The White House.

The White House's twitter account messaged: “RT if you agree no child should have to face bullying because of who they are – then learn how you can help: #SpiritDay.”

(Related: The Talk celebrates Spirit Day.)