I love gardens! While I haven't traveled as extensively as some of you, I have visited some gardens that I remember fondly...

The Bagatelle Rose Garden in Paris (In full bloom, it will take your breath away.)
The Garden of the Fort St. Andre in Villeneuve Avignon
The Cloister Garden at the monastery of St. Paul outside St. Remy
The Garden of the Villa Cimbrone in Ravello

What gardens have you been to that a fellow garden-lover should see before he expires? (By the way, I'll be in Yorkshire visiting some gardens this summer!)

Oh heck.. I'll add one more--the gardens at the Villa Vizcaya in Miami. A little bit of Tuscany in the tropics.

Birr Castle gardens in Ireland.

The incredible display at Chalet La Floria, a mountain restaurant perched above Chamonix (actually above Les Praz, if you want to go there). I saw my first hummingbord hawk-moth there.

Logan Royal Botanical Garden, Port Logan Scotland. It has a collection of mostly southern hemisphere plants.

Keukenhof.... beauty incarnate.

La Foce in Italy, beautiful.

Kew gardens
Villa d'Este gardens
The Tarot garden de Niki de St-Phalle
All very different gardens...

More in the UK than you can count, but I am very fond of Kew, Bodnant (Wales) and Inverewe (Scotland)

Now just if you happen to be in the neighborhood, there's a tiny little garden in Yvoire, France (on Lac Leman), which is called something like the garden of the five senses. There's a garden room devoted to each with plants chosen to appeal particularly to that sense. I enjoyed it so much, I missed the last boat back to Swiss Leman. Oops. J.

Longwood Gardens, Kennett Square, PA, USA

I love to see the thousands of roses all in first bloom in Queen Mary's Rose Garden - Regents Park, London. About second week of June.

Guy - Some of my favourites are:

Leonardslee gardens (Sussex)
Stourhead (Wiltshire)
Exbury gardens (Hampshire)

http://www.leonardsleegardens.com/

http://www.nationaltrust.org.uk/main...-stourhead.htm

http://www.exbury.co.uk/exbury/index.htm

Steve

Chateau de Villandry in the Loire Valley

The rose garden (whose name I can't remember and that you have to pay to enter) in Douy la Fontaine in the Loire Valley

Angers Jardins des Plants in Angers France

The gardens I've seen so far....

#1 Villa d'Este in Tivoli for the fountains
#2 Villa Taranto on Lago Maggiore
#3 Vilandry - all around amazing

The garden of the Musee Rodin in Paris, complete with beautiful sculptures.

ttt

Rodin Gardens, Paris

Borghese Gardens, Rome

The Rose Garden, United Nations, NY

and

the Cloisters at Westminster Abbey

Every garden lover must see the Keukenhof tulip garden in Holland before they die. It's only open from mid March to mid May but there isn't anything like it in the world.
Also the Royal Botanic Gardens in Edinburgh.

Luxembourg Gardens Paris

Longwood Gardens in Pennsylvania, USA