Elmgarden has dated this piece to the 19th Century.
The gazebo is made up with 12 of these teak panels, they have a heavily carved Arch at the top, on solid upright posts, the panels show no signs of ever having been painted, some of the wood does seem too have been oiled, but it is all very dry now and could so with feeding, there are 8 of the more enclosed panels and 4 other open panels.

These very large and heavy panels came from a structure like a Gazebo, there is a photocopy of an old drawing of the Gazebo, but no more detail than that.
The roof is flat at the edges with decorative fretwork borders, it then goes into a pitched roof at the centre with a pyramid like shape that sits on the top. When the roof is laid out on the ground it is 176” in diameter

As to condition, the panels are very heavy and on the whole sound, there are minor losses to the carved decoration but nothing serious
The Gazebo comes with iron bolts but the pieces fit very well when stood together, so I think a competent DIYer could remake the Gazebo complete with very little new wood required
176” in Diameter, 116” tall at the sides going into a pitched roof at the centre
I can arrange delivery of this Gazebo, the cost will vary according to location
RB18
Elmgarden has dated this piece to the 19th Century.
You can view the stock and full dealer information on the Elmgarden Profile Page