Auburn Valley State Park in Delaware, USA - map and visitor information

Research checked: 2026-10-23. Check linked official notices before travel.

Auburn Valley State Park combines Yorklyn's industrial history with trails and restored landscapes along Red Clay Creek. Choose a trail visit, a guided look inside Auburn Heights Mansion, or a steam-themed event. The mansion and Marshall Steam Museum have their own visiting schedules, so admission to the park does not mean that both buildings are open.

Highlights in Auburn Valley

• Auburn Heights Mansion preserves a late-19th-century home associated with the Marshall family.
• Marshall Steam Museum presents the family's steam-vehicle collection through a separate partner operation.
• Trails connect parts of a landscape shaped by paper production, historic bridges, woodland, and restored wetlands.

Match your visit to the schedule

Fees, hours, and seasonal access

The current Delaware park fee notice explains the vehicle basis. Use the attraction's own schedule when planning an indoor visit.

Respect the working historic setting

Follow your guide through the mansion. Leave historic objects in place and keep clear of vehicles and equipment during demonstrations. Choose the marked visitor routes through the park rather than treating former industrial areas as open exploration sites.

Public tours and private groups

Weekly public mansion and museum visits do not require advance ticket purchase. Groups of eight or more can arrange a reserved tour. Private group tours do not include the antique-car or train rides offered at designated events.

Check the public and group tour arrangements for the service you want. Touch tours can be arranged for visitors with low or no vision; ask about booking and group size.

Arrive in Yorklyn

Auburn Heights Mansion and Marshall Steam Museum share the visitor address 3000 Creek Road, Yorklyn, Delaware 19736. Park trails cover more than the mansion grounds. Choose your trail access separately when planning a walk.

Nearby parks by road

Brandywine Creek State Park, approached from Adams Dam Road, is another regional option. White Clay Creek State Park lies north of Newark, with recreation-area access from Route 896. Check the entrance for your chosen activity before setting out; these are separate parks.

Walk the valley or plan a steam event

Explore the Auburn Valley and Oversee Farm trail areas for a view of the valley's changing land use. A mansion tour focuses on the Marshall home, while a museum visit centers on steam vehicles.

For antique-car and miniature-train rides, consider a scheduled Steamin’ Day. Event admission includes museum access and available mansion tours, but mansion tour spaces are limited. A weekly museum visit does not offer the same program.

Choose the right attraction and assistance

The state park operates the mansion. Friends of Auburn Heights operates Marshall Steam Museum. Ask the relevant operator about tour access and assistance before visiting. A mansion tour normally lasts about an hour; plan that time separately from your walk or museum visit.

About Auburn Valley State Park

From paper making to a state park

The Marshall family's 1897 mansion overlooks a valley shaped by paper production. DNREC's park plan includes former industrial land, historic bridge connections, woodland, and wetland restoration. These features explain why the park's story extends beyond the house and vehicle collection.

Contact the park and museum

For state park interpretive programs, call 302-239-5687. For Marshall Steam Museum, call 302-239-2385. The partner's contact directory distinguishes the two operations.