“Longwood Reimagined” is the theme this year. Brand new spaces—from the new West Conservatory to new outdoor landscapes—are decked out for the holidays. 1001 Longwood Rd., Kennett Square. $23–$42. Timed tickets required. LongwoodGardens.org.

Yuletide charm meets contemporary creativity in the historic mansion. Delight in beautifully decorated trees inside and out and marvel at a large-scale gingerbread house and 18-room dollhouse. Enjoy enchanting decorations and outdoor lighting inspired by the woodlands of Winterthur. 5105 Kennett Pk. (Rt. 52), Winterthur, DE. Daily 10 to 5; Wed, in Dec. till 8. […]

Returning this year with Holiday Home and Garden Tours, the 7th annual Gingerbread House Contest and Santa Day. Dec. 10, 12, 17, 19, Holiday Nights Tours, 4 to 7. Hagley’s Library & Soda House, 298 Buck Rd., Wilmington. Daily (closed Wed) 10 to 5. $10–$20. Hagley.org.