Indiana has a jail that turns like a carousel, a hidden maze beneath downtown Indianapolis, and a park where a colossal steer shares the billing with a tree stump. These five Indiana oddities reward a detour with unusual machinery, unexpected history, and a few things that are simply much larger than you expect.
1. Rotary Jail Museum
Crawfordsville, Indiana
Most old jails have a door for every cell. Crawfordsville built its cells into a steel drum and turned the whole thing instead. A hand crank rotates the wedge-shaped compartments until one lines up with the single entrance. It’s an extraordinary piece of Victorian machinery with a very unsettling job.
The jail opened in 1882 and held prisoners until 1973. Its original mechanism still operates, and museum demonstrations show the heavy cage moving. The design caused serious safety problems during its working life, so the engineering comes with a sobering story. Check the seasonal calendar before visiting.
Explore Rotary Jail Museum in the Oddities Directory.
2. Indiana Medical History Museum
Indianapolis, Indiana
The Old Pathology Building at the former Central State Hospital feels like a laboratory that carefully packed up yesterday, except yesterday was more than a century ago. The Indiana Medical History Museum preserves clinical laboratories, a medical library, a teaching amphitheater, and an autopsy room with period instruments.
This is a serious medical-history collection, including human skeletons and preserved organs. Guided visits require an advance appointment, and the subject matter may be difficult for young or sensitive visitors. The second floor has no elevator, though video tours offer an alternative for visitors who cannot use the stairs.
Explore Indiana Medical History Museum in the Oddities Directory.
3. Indianapolis City Market Catacombs
Indianapolis, Indiana
Beneath downtown Indianapolis, rows of brick arches make the City Market Catacombs sound almost appropriately named. There are no ancient burials here. The roughly 20,000-square-foot space is the surviving foundation of Tomlinson Hall, a public auditorium destroyed after a fire in 1958.
Workers once used these cool passages for storage beneath the busy market square. Today, scheduled Indiana Landmarks tours reveal the barrel-vaulted arches, limestone columns, and old ice-storage pits. Reserve ahead, wear closed-toe shoes, and expect low light, stairs, and uneven dirt surfaces. The underground setting is not wheelchair accessible.
Explore Indianapolis City Market Catacombs in the Oddities Directory.
4. Jug Rock
Shoals, Indiana
Jug Rock looks like someone left an enormous stone bottle in the woods. A narrow sandstone column widens toward the top, with a broad cap perched above it like a stopper. At about 60 feet tall, it’s a jug with absolutely no practical carrying handle.
Weathering gradually separated the formation from a nearby ridge, leaving bands and embedded pebbles that hint at its long geological history. A short, sometimes overgrown trail leads from a small gravel pull-off. The preserve is free to visit from dawn to dusk, and climbing is prohibited. Look up, take a picture, and let the rock keep its balance.
Explore Jug Rock in the Oddities Directory.
5. Old Ben and the Giant Sycamore Stump
Kokomo, Indiana
Kokomo’s Highland Park puts two oversized curiosities conveniently close together. Old Ben is a taxidermied steer that weighed more than 4,500 pounds when he died in 1910. Behind glass, he remains an impressive argument that “big cow” can be a destination in its own right.
Nearby, a hollow sycamore stump measures roughly 12 feet tall and 18 feet across. Its age is debated; its size needs little explanation. Both are free to view during park hours, making this an easy stop when you want a pair of Indiana oddities without adding a second address to your route.
Explore Old Ben and the Giant Sycamore Stump in the Oddities Directory.
Book the guided visits first, then fit the outdoor stops around your route. Indiana makes a good case for looking beyond the obvious landmarks: sometimes the most memorable sight is below the street, behind an old jail wall, or waiting quietly in a park.