On an unrelated note, I'm up to 28/30 of the MLB parks. Unfortunately NHL arenas don't quite have the same charm. Off the top of my head:
Staples Center/Crypto: Been to countless Kings games over the years, but happened to go to the first Kings game when Staples opened in October 1999. Never did make it to the Forum, although comically when I was younger my dad forbade me from going since he claimed gang members would shoot me for cheering for the other team.
Honda Center: closest NHL to me, notably went to Games 4/6 of the 2003 SCF.
SAP Center: couple of Devils@Sharks games and a Ducks@Sharks game
Roger Arena: 2009 preseason + 2019 Draft
Prudential Center: try to get to a Devils home game every other year if possible
Madison Square Garden: Oddly I've seen more basketball games (3) than hockey games (1)
Barclays Center: Devils/Islanders preseason before the Isles used it as a home rink
Joe Louis Arena: Blackhawks/Red Wings preseason game
Capital One Arena: Preds/Caps preseason game, oddly I've seen two WWE events in that arena
T-Mobile Arena: couple Devils@Knights game, and then my buddy had an extra ticket for 2023 SCF G1
American Airlines Arena: still mad at JetBlue, had a flight cancelled and my friend was going to surprise me with glass seats for a Devils@Stars game. Went to Devils@Stars the following season but was still bitter.
TD Garden: I've seen two Devils@Bruins games, Devils shut out both games. Saw 2022 Frozen Four semifinals.
Mullett Arena / whoever sponsored their Glendale arena: I think I saw three Devils@Coyotes games over the years.
ClimatePledge: Caught Devils/Kraken in 2023
Xcel Energy Center: 2011 Draft, not sure that counts
Enterprise Arena (probably a different sponsor now): 2015 Draft
United Center: 2017 Draft plus a random Bulls game
The Sphere: 2024 Draft
Dodger Stadium: Ducks/Kings outdoor game
Yankee Stadium: took a red eye after the Dodger Stadium game and caught Devils/Rangers the next day
And then caught college games at Yost (Michigan) and Conte (BC). Saw a USHL game in Ann Arbor between Youngstown (Kyle Connor) and the USNTDP (Matthews/M.Tkachuk/McAvoy) among others. The day before that I crossed the border to watch Erie (McDavid/D.Strome/DeBrincat) play in Windsor. Caught an OHL game between now defunct Plymouth (Wilson/Noesen) and London (Domi/Horvat/Zadorov) in 2012. Saw Arizona State host the USNTDP (Keller/Oettinger/Fox) in a meager rink before they got the current barn. Caught WHL games in Seattle/Portland. Took a field trip last month to catch the U18 semifinals in Frisco. And I'll usually catch an AHL game or two with the San Diego Gulls every season.