Hannibal residents get into the Mark Twain Boyhood Home & Museum free, which is the single most useful fact about the town’s biggest attraction and the one visitors’ guides never mention. Everyone else pays $20 for a ticket that is good for two days and covers eight separate buildings. Seniors 60 and over and veterans pay $15, children 6 to 17 pay $6, and children 5 and under are free.
What is open right now
The visitor season is turning over. Several places shift to winter hours or close entirely in the next few weeks, so check before you drive.
| Place | Season and hours |
|---|---|
| Mark Twain Boyhood Home & Museum 120 N. Main St. · 573-221-9010 | Daily 9–5 through Nov. 2, then daily 10–4 from Nov. 3. Closed New Year’s Day, Easter, Thanksgiving and Christmas. |
| Mark Twain Cave Complex 300 Cave Hollow Rd. · 573-231-1000 | The lit, one-hour cave tour runs year-round. Cameron Cave’s lantern tour and the Wild Tour are May through September only. Hours are 9–6 through October, then 9:30–5 from November. |
| Mark Twain Riverboat Center Street landing · 573-221-3222 | One-hour sightseeing cruises daily through Nov. 4, from $29. Two-hour dinner cruises through Oct. 28, boarding at 5:30 p.m. in October, from $62. |
| Rockcliffe Mansion 1000 Bird St. · 573-221-4140 | Guided tours daily through Nov. 15, then closed for the winter. Also operates as a bed and breakfast on the same season. |
| Mark Twain Birthplace State Historic Site Florida, Mo., about 40 miles southwest · 573-248-9980 | Tuesday–Saturday 10–4 through October. From November it drops to Friday and Saturday only, 10–4. |
| Mark Twain “Live!” Cave Hollow Theatre | 2 p.m. daily through October. |
| Jim’s Journey: The Huck Finn Freedom Center 509 N. Third St. | By appointment until Memorial Day. Regular hours are Friday–Saturday 11–5 and Sunday 1–5 in summer. |
Free, and open whenever you are
Four of the best-known sights cost nothing. The Tom & Huck statue at North and Main, dedicated in 1926, sits at the foot of Cardiff Hill and is the town’s most photographed spot. Above it, the Mark Twain Memorial Lighthouse is 244 steps up — built in 1935 for the centennial of Twain’s birth, and worth knowing before you start climbing that there is no public access inside; accessible parking is off Cardiff Hill Drive. Lover’s Leap, off Highway 79 at the south edge of town, is a five-acre overlook with a shelter and a view across into Illinois. Sodalis Nature Preserve has paved trails over a former lime kiln mine that is now a bat hibernaculum; the parks department runs guided bat hikes in late summer and fall.
The calendar ahead
- Warehouse of Nightmares — Fridays and Saturdays, Oct. 2–30. Run by the Hannibal Jaycees.
- Autumn Folklife Festival, 50th year — Saturday Oct. 17, 10–5, and Sunday Oct. 18, 10–4. Hannibal Arts Council, 573-221-6545.
- Mark Twain’s birthday — Twain was born Nov. 30. The museum has held a birthday event the Saturday before; the 2026 date has not been posted.
- Victorian Festival of Christmas — opens Nov. 28 and runs Saturdays through December: parade, living windows, home and church tours, carriage rides.
The two big summer events have already run this year. National Tom Sawyer Days, the 71st, ran June 27 to July 5 with fence painting, frog jumping, mud volleyball and fireworks. The Big River Steampunk Festival, its 12th year, ran Labor Day weekend. Both return in 2027 on the same holidays; neither has announced dates.
Where to check
Hours change with the weather and the season, and a few places close on short notice. The museum posts its own schedule at marktwainmuseum.org, the riverboat at marktwainriverboat.com, and the Cave Complex at marktwaincave.com. The Hannibal Convention and Visitors Bureau keeps the master events calendar at visithannibal.com.