An Arch wherethrough Gleams the untravelled world...

"I am a part of all that I have met;
Yet all experience is an arch wherethrough 
gleams that untravelled world,
whose margin fades 
for ever and ever when I move"
Lord Alfred Tennyson, Ulysses, 1833
Is there anything as lovely as an arch
in a magically luxuriant garden?

images: 1: house for sale in South Yarra,
2: garden design of Mulberry Cottage by EGA, Mornington Peninsula
3: moongate at Stonecrop Gardens, NY