Boise, ID
Museum next to the Old Pen complex with Idaho minerals, fossils and mining exhibits. It is an efficient way to add genuine geological context to the state's mine and lava-field stops.
- Access
- Seasonal or ticketed

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Giant objects, odd monuments and things built for no clear reason.
Boise, ID
Museum next to the Old Pen complex with Idaho minerals, fossils and mining exhibits. It is an efficient way to add genuine geological context to the state's mine and lava-field stops.
Shoshone, ID
A privately operated lava-tube attraction eight miles north of Shoshone with a maintained self-guided route and provided lanterns. It is open for the 2026 season on a reduced weekend schedule after Labor Day and closes for winter after September 28.
Millers Creek, NC
This old-school roadside restaurant is built with a rounded white facade designed to resemble an igloo. The business is still serving hot dogs, burgers, sandwiches, and ice cream in 2026, making the architecture a living roadside attraction rather than a preserved shell. Current listing: https://www.restaurantji.com/nc/millers-creek/igloo-ice-cream-and-sandwich-shop-/ Location reference: https://mapcarta.com/N6984550225
Tucson, AZ
Restored neon, hand-painted signs and commercial sign-making artifacts fill this small Tucson museum. Many pieces are displayed lit, turning old advertising hardware into a concentrated room of glowing roadside history.
Fennimore, WI
A giant fiberglass rat clutching cheese stands outside a Fennimore cheese business, leaning fully into Wisconsin's dairy identity. The oversized rodent is a classic highway-photo oddity rather than a formal attraction.
Union, IL
The country's largest railway museum preserves an enormous operating collection of locomotives, streetcars, interurbans, and historic transit equipment.
Springfield, IL
A walk-through Route 66 attraction at the fairgrounds combines recreated roadside scenes with restored and replica neon signs.
St. Charles, IA
Originally built in 1870, Imes is the oldest surviving covered bridge associated with Madison County. It now stands in a public park as a preserved pedestrian landmark.
Redcrest, CA
This roughly thousand-year-old redwood survived lightning, fire, flood and an attempted logging cut, with scars and high-water marks still visible from the roadside stop.
Wilmington, DE
A scaled replica of Philadelphia's Independence Hall sits unexpectedly along Concord Pike. The miniature landmark is easy to overlook from the road, which is exactly what makes it useful as a quick OddWay detour.
Indian Hills, CO
The Indian Hills Community Center sign is locally famous for a rotating stream of groan-worthy puns and one-liners. The sign is visible from the public road; the community center itself is not an attraction unless an event is open to the public.
Flovilla, GA
A stone spring house built by the Civilian Conservation Corps encloses the mineral-rich water that made Indian Springs a destination long before modern state parks. Visitors can still sample the distinctive sulfurous water, turning a roadside park stop into a literal taste of Georgia geology.
Arco, ID
Large collapsed lava tube reached on the Caves Trail. NPS cave entry requires the current cave permit/screening procedure, and conditions can close caves seasonally.
Corydon, IN
Indiana Caverns provides public access to part of the Binkley Cave system, one of the state's major underground networks. Cave exploration in the system has revealed Ice Age animal remains and other paleontological material, while the commercial tour combines walking and underground boat travel.
Arco, ID
A steep black cinder cone with a short climb to panoramic views across the Great Rift volcanic landscape. Follow the maintained trail and current NPS weather guidance.
New Haven, CT
Eero Saarinen's dramatic hockey arena is nicknamed the Yale Whale because its sweeping roof and curved concrete spine resemble a giant marine animal. It remains an active Yale athletic venue, so interior access depends on games and university events.
Georgetown, TX
A large cave discovered accidentally during interstate construction, now offering developed and adventure tours through fossil-rich chambers.
Covington, LA
This working alligator ranch offers guided visits explaining the commercial alligator industry and allows unusually close viewing of large numbers of animals. Tours are controlled experiences, so use the ranch's reservation and operating rules.
Goldfield, NV
Dozens of painted cars, buses, and vans are planted nose-first or stacked across the desert as a sprawling, constantly weathering outdoor art installation.
Denver, CO
A former Lutheran church transformed by the Elevationists into a brightly painted immersive art space with a psychedelic interior. Public experiences are separate from the congregation's religious services, so visitors should use posted tour/event access.
Dunseith, ND
This vast formal garden physically straddles the United States-Canada border, allowing visitors to move through a landscape designed around an international boundary and peace symbolism. The combination of border monuments, formal gardens and remote Turtle Mountain setting makes it more unusual than a standard botanical garden.
Morgan City, LA
Mr. Charlie is a preserved offshore drilling rig that helped pioneer movable offshore oil production in the Gulf. Guided access turns a major piece of industrial infrastructure into a walk-through museum.
San Angelo, TX
A specialized public garden containing an unusually large collection of waterlilies, including rare and hybrid varieties.
Taylors Falls, MN
Powerful meltwater drilled enormous cylindrical potholes into basalt along the St. Croix River. A concentrated cluster beside the park's trails lets visitors stand among some of the deepest and most dramatic glacial potholes in the region.