When Is Sonnenberg Gardens and Mansion Open, and What Are the Hours?

Updated

Sonnenberg Gardens and Mansion State Historic Park operates seasonally, from May 1st through October 31st. During that season, the gardens and mansion are open Thursday through Monday, 9:30 am to 4:30 pm, with the admissions booth closing at 4 pm. If you're planning a visit, these are the hours to build your trip around — and it's worth confirming them on the official site before you go, since seasonal schedules can shift.

Opening Season and Daily Hours

The estate follows a set seasonal calendar rather than operating year-round:

Detail Information
Open season May 1st – October 31st
Open days Thursday – Monday
Daily hours 9:30 am – 4:30 pm
Admissions booth Closes at 4 pm

Two things stand out for planning purposes. First, the site is closed Tuesdays and Wednesdays during the season. Second, even though the grounds stay open until 4:30 pm, the admissions booth stops admitting visitors at 4 pm — so arriving in the final half hour won't get you in.

What This Means for Planning Your Visit

The 50-acre estate includes flower-filled gardens, mature trees for picnicking, and a historic mansion, so a visit can easily fill a few hours. Because the admissions booth closes at 4 pm, aim to arrive well before then to have meaningful time on the grounds.

  • Closed days: Tuesdays and Wednesdays during the open season.
  • Off-season: The park is not open from November through April.
  • Last entry: Plan to be at the admissions booth before 4 pm.

Beyond a Standard Visit

The same property hosts ticketed and scheduled experiences that may fall outside or alongside regular hours, including weddings in the formal gardens, guided bus tours of the gardens, greenhouses, and mansion (which can end with a private wine tasting), and seasonal events such as the Fall Gardening Forum, Mansion Mysteries, and the Haunted Stroll. If you're attending one of these, check the specific event listing rather than relying on the general hours above.

Before You Go

Hours, admission details, and event schedules are best confirmed directly through the official Sonnenberg Gardens and Mansion site, where you can also find the map and directions, buy event tickets, and review membership and donation options. Treat the hours above as your baseline, then verify the current schedule for your intended date.