Answer: Under a sycamore tree
In this poem, the speaker is visiting Tintern Abbey, and he tells us that he has been here before. He is thinking of the times in which he visited the place as a child, and how he enjoyed it. He also reflects on how he looks at the world now. He can now appreciate the depth of beauty and sentiment that nature transmits. He tells us that he is admiring this view from underneath a sycamore tree in the following stanza:
The day is come when I again repose
Here, under this dark sycamore, and view
These plots of cottage-ground, these orchard-tufts,
Which at this season, with their unripe fruits,
Are clad in one green hue, and lose themselves
'Mid groves and copses.