Skip to Main Content

Sweetwater, Tennessee: The Lost Sea Team Field Report

The Lost Sea

140 Lost Sea Rd, Sweetwater, TN
I-75 exit 60. Turn east onto Hwy 68. Drive a little over seven miles. You'll see the Lost Sea entrance sign on the left.
Open daily 9 am, closing times vary with seasons. (Call to verify) Local health policies may affect hours and access.
Adults $22, Kids $13
RA Rates:
Major Fun
Save to My Sights

The Lost Sea.

The Lost Sea

It's been lost in a cave. See the sea by boat. It's really a lake, not a sea, but it has hungry fish and helpful tour guides. Report... [06/19/2016]

Visitor Tips and News About The Lost Sea

Reports and tips from visitors and Roadside America mobile tipsters. Some tips may not be verified. Submit your own tip.

Cave info.

The Lost Sea

July is their busiest month according to our guide. The Lost Sea is open year round except for Christmas. There is also a general store, sweet shop, glassblowing shop, gem mine, nature trails for hiking and some other odds and ends.

[Cole I., 08/29/2016]
The Lost Sea - Underground Lake

My husband and I were driving cross-country and saw the billboard. We looked it up on Roadside America and thought the reviews made it sound fun. It is! We took our four month old daughter and had a blast.

Yes, it was difficult at times to go up or down through the cave, but well worth the effort my husband put in. He carried her in a front carrier the entire time. The boat ride was short, but loads of fun because of the entertaining fish and the tall tales from the guide. The wait outside to get in was okay; would have liked it a bit faster because it was so hot, but then we would have run over the tour group in front of us, so it was good timing.

[Brickner3, 07/22/2010]
The Lost Sea

The water has risen in the cave and the glass bottom boats are running again -- water is clearer and you can see the fish. Nice cool place to go in the summertime.

[Richard, 12/19/2009]
The Lost Sea

An interesting place to visit, though I agree with the comment that the official website hypes it way too much. The water was indeed murky and I felt sorry for the trout. Still, the geology and human lore of the place is worth knowing.

Because it has had fairly constant use over many centuries, many of the formations one expects to see have been damaged. The company offers a Wild Tour that apparently takes you to less visited spots in the cavern.

Next to the cave tour is a small "village" with a gift shop, glassblower, smithy demo, and "gem mining" (buy a bag of dirt and run it through the sluice.).

The village closes 2 hours earlier than the cave tour, so visit it first.

It's also in the Eastern Time Zone, so we were expecting another hour to visit since we came from the Nashville area to see it. Adjust your watches early so you won't be surprised.

[Karen R.from Utah, 07/31/2008]

Nearby Offbeat Places

Big Cows, Ice Cream - Dairy TourBig Cows, Ice Cream - Dairy Tour, Athens, TN - 10 mi.
Nocatula and ConnestogaNocatula and Connestoga, Athens, TN - 11 mi.
The Bone Yard FamilyThe Bone Yard Family, Loudon, TN - 14 mi.
In the region:
Varicolored Veterans of Valor, Harriman, TN - 28 mi.

Latest Tips Across Roadside America

Catch up on the latest discoveries from the road.

Explore Thousands of Oddball Tourist Attractions!

Unique destinations in the U.S. and Canada are our special obsession. Use our attraction recommendation and maps to plan your next road trip.

My Sights

My Sights on Roadside America

Create and Save Your Own Crazy Road Trip! ...Try My Sights

Mobile Apps

Roadside America app: iPhone, iPad Roadside America app for iPhone, iPad. On-route maps, 1,000s of photos, special research targets! ...More

Roadside Presidents app: iPhone, iPad Roadside Presidents app for iPhone, iPad. POTUS landmarks, oddities. ...More

Tennessee Latest Tips and Stories

Latest Visitor Tips

Sight of the Week

Sight of the Week

Pizza Hut Museum, Wichita, Kansas (Nov 27-Dec 3, 2023)

SotW Archive

USA and Canada Tips and Stories

More Sightings