Yes, the USS Olympia is in Philadelphia. It’s a superb ship, one of the last predreadnought armored cruisers left. She’s 100% worth the visit. There was a time when her future was in doubt but I believe they finally found private funds to make repairs to the hull, and may or may not be drydocking her in the near future to repair the keel. Would have been a huge shame to have to sink her, or scrap such a beautiful ship.
And yes, it’s always a challenge to preserve old ships, even just logistically since the techniques used to build them often get lost along the way. In ref to the OP, that is one superb model. Amazing! HMS Victory is definitely one of the great classic ships still afloat.