Open every month; times vary - see website
To me, this is one of those things that you do once to be able to say you've "been there, done that, and bought the t-shirt." While I found the whole experience interesting, I couldn't say that it changed my life or that I would ever want to go again. If you're claustrophobic, you probably will not enjoy this.
We had toured lots of caves and caverns, but this one was definitely the best. The glass bottom boat ride is lots of fun and great for kids. The guides are especially knowledgeable about local history and answered lots of questions. The walk is pretty strenuous, but there are a couple of opportunities to stop and catch your breath. Sturdy shoes are a must.
We had great time exploring the Lost Sea. It's a little pricey in my opinion but we had a lot of fun. The guides are well educated on the history of the caves and the boat ride at the bottom is really cool to be able to see the fish swimming underneath the boat. It's quite a little trek especially getting up after going down. But our kids (6,4,2) did ok getting back up. Our tour group was a little big and I think I would have preferred a smaller group of people. Overall it was a ton of fun.
We vacationed in Gatlinburg, TN and decided to take our last full day and take the 2 hour drive to Sweetwater for the Lost Sea attraction. We lucked out as there weren't a lot of people there, and were able to get into the tour fairly quickly.
We enjoyed the tour, and loved learning about the cave and its history. Seeing the oldest graffiti there (1863 by the rifles of soldiers camped out there) was a treat. Our tour guide was David, and he did a great job keeping it fun and interesting. The boat ride on the lake was nice too, and just the fact of knowing it's the biggest underground lake they know, and they have no idea just how big it is (it goes beyond their instruments) was amazing. It's a great place to go and relax, and to enjoy some history.
I've never been to other caves, so I don't know how it compares, but for my first time out this was a hit.
The village wasn't a must see, but it worked. We ate at the restaurant for lunch, took a walk on the trail (not one of the best, but good enough, esp with kids) and finished up with ice cream at the sweets shop.
A trip to the Lost Sea will undoubtedly be nothing more than time lost. We spent more time waiting in line (dealing with line jumpers) than we spent on the actual tour. In regards to the tour, we spent exponentially more time in the cave than at the sea. Correct me if I'm wrong, but that was the part we came for, right? We spent a total of about 5 or 10 mins on the "sea" which, let's face it, is basically a glorified underground mud puddle. This would should be considered a cave tour, which is what it basically is.
This is a must see guided tour if you are in Sweetwater. The cavern houses America's largest underground lake. Many great formations are along the tour and everything culminates on a glass bottom boat on a vast lake with blind trout.
Bring a light jacket and wear good shoes and it does involve some lightly uneven terrain.
There's and 18th century village on the property where you can stroll through, visit the store, and experience life from another era.
We stopped here on a whim and it was one of the best stops mid-trip ever! There was a guided tour that lead you through the caverns and many interesting formations were pointed out by the guide. Definately a learning experience. At the end of the hike, they take you to a glass bottomed boat where you feed gigantic trout! You may get splashed! They explain why the trout are there, so no spoilers from me!
Bring a light jacket, it's a bit chilly, in the low 60's, all year round.