Four poster bed

A four-poster bed is a bed with four vertical columns, one in each corner, that support a tester, or upper (usually rectangular) panel. This tester or panel will often have rails to allow curtains to be pulled around the bed. There are a number of antique four-poster beds extant dating to the 16th century and earlier; many of these early beds are highly ornate and are made from oak. An example of such an early 16th-century four-poster resides in Crathes Castle, which was made for the original castle owners in the Burnett of Leys family.

...
Wikipedia