The oaths administered to date have been taken place in the following locations:
U.S. Capitol (55 occasions)
East Portico — 34
Hall of the House of Representatives — 6
Senate Chamber — 3
West Front — 9
East Front of Original Senate Wing — 1
President's Room — 1
Rotunda — 1
Vice President's Room — 1
White House — 6
Old Brick Capitol (1st & A Sts., N.E.; site of present Supreme Court Building) — 1
Washington, D.C. (not in Capitol or White House) — 2
Outside Washington, D.C. — 7
https://www.aoc.gov/what-we-do/programs-ceremonies/inauguration