I've only been to Winterthur - just this past July - and we had limited time too. I thought it was wonderful. We took a docent led tour and it was very worthwhile. Our tour included a garden tram tour that took us from the parking area to the mansion. That docent was also very interesting. My regret was that we didn't have more time.

I would definitely pick Longwood. I've been to both - Winterthur in the spring is gorgeous when their Azalea Woods is in bloom.

Longwood is quite big - there are many outdoor gardens, and several conservatories. I think you will really enjoy it.

With a half day, you really should not (cannot) do both - you wouldn't get a chance to really see either one that way.

I agree that you can't do both. I haven't been at Longwood in mid-October, but you really can't miss there; the gardens and grounds are so lovely. I think the conservatories rival any I have seen anywhere in Europe. The last time I ate in the restaurant for lunch it was good. There is also a lovely picnic grove if you want to pick up something on the way - you enter the picnic grove by car prior to actually gaining admission to the grounds.
I envy you the experience of seeing it for the first time.
Baz

I've been to both Winterthur and Longwood Gardens years ago, but Longwood sticks out a lot more as a place I enjoyed more. It was so big and so beautiful, and I've always wanted to go back but haven't had a chance.

3 out of 3! Now, I guess I'll have to get to Longwood one of these days!

Well, I have to disagree. I've been to both and I prefer Winterthur, BUT I'm not a gardener. Longwood was nice and all, but not as great as Winterthur. Actually, my favorite in that area is Nemours.

Neither Longwood nor Winterthur is "on the way" from Lancaster to Philadelphia, but Longwood is definitely less out of the way. So, I guess that's a +4 vote for Longwood.

Thanks so much for the input... we are actually taking a little detour on the backroads to Philly to do either sight!

What is "nemours" in the area?

I guess we will have to wait and see what the weather does ... is dining a factor if choosing Winterthur? It all sounds enticing.

Your help is indispensable and SWIFT!!!

I've never been to Winterthur but have been to Longwood in Oct and there is always something to see there in every season. I believe the fountains are turned off on Oct 18 this year. I remember they had some serious pumpkin displays and the amazing handmade glass pumpkins they were selling at the conservatory last fall. I'm really hoping to go there for their holiday displays this year. It's not a big of a detour to visit Longwood from Lancaster to PHL. US 30 to PA 41 (GAP)to US 1, prob about 50 min drive, 35 miles or so.

http://www.nemours.org/mansion.html

Frankly, I think EACH deserves a day. But if you have 1/2 and love flowers, go to Longwood and visit the Conservatory first. If a room of cacti, a room of orchids, a room filled with seasonal flowers and decor doesn't suit you, then walk around outside. It is large but well-marked.

If architecture and furniture is your thing, go to Winterthur (pronounced winter tur). It is my fave because of the house filled with pre-factory-made American furniture. Check online about reservation times though.

Nemours is the name of another duPont home that has recently reopened and it is pretty spectacular. Check on line for directions and reservations.

I believe that Nemours was the area or town in France where original duPonts came from.

Oh, the Hagley (Hegley??) house is pretty cool also. Family's first home and more tied to their gunpowder factory.

Both of these houses could be "done" in half days as well.

It's a very interesting area.

In short, Longwood is best for those who love long leisurely walks through beautiful gardens. Winterthur is better for you if you prefer what is mainly a house and antique collection tour in a beautiful setting. Let us know which you choose!

You CAN do both in a single day - but you'll be disappointed in the result if you're trying to LEARN.

In prime season (April & May through early June) Winterthur & Longwood will tug at your sleeve in equal measure. The difference between them is the allure of the naturalistic gardens at Winterthur - most evident in March through May - & the annual garden + conservatory at Longwood - the former of interest May through September & the latter of interest year round.

What's missing in making a decision is knowing about the Henry Francis du Pont Museum - his home donated to become a museum in 1951 that contains the world's finest collection of American Decorative Arts - antiques from 1640 to 1860 - arranged in room settings that leave you feeling that the owner of the home has just nipped out for a moment...

The Museum is a miracle year round - just as the Longwood Conservatory intrigues year round. Visit both, but learn about America's past at Winterthur.