Definitely worth the adventure to cross the bridge for a breath of fresh air and to take it all in. The gift shop is very nice and so is the exhibition on the other level.
However, I don’t recommend the 1-2 mile treacherous extension loop hike to get to the top parking lot from the lower lot, UNLESS you are very athletic and an avid hiker because it was filled with huge boulders, many roots, muddy terrain, and constant elevation changes that were difficult to climb and walk through for the average healthy person, while it didn’t provide any scenic overlook advantages really, just put us in harms way due to the extreme difficulty level of the hike.
(It was not labeled nor warned as such)