"A talan? Oh, you mean one of those tree platforms the Wood-elves use to make it possible for them to live high above the forest floor. Yes, I have! I used to cross the River Gelion and visit the Ossiriandi, sometimes with Amrod and Amras, who spent the most time with the Wood-elves of Ossiriand. We'd sometimes go to the summer festivals and drink and dance till midnight or later, and then we'd climb up into a guest-dwelling in a tree and throw ourselves down on the boards and wrap ourselves in our cloaks and sleep until the sun rose."

Of course, it was even nicer to be invited separately by a friend, and spend the night. . . in, er, let's call it a two-person moonlit revel. Oh yes, many things can be done in a tree!