Sleek, modern, exactly what we were looking for.  My husband and I put this together in about 7 hours total - this included some pre-assembly of the beams. It pays to read through the instructions, organize and pre-asssemble your bolts and washers before the full-on build.  That took about 2 hours total.  It took us about 5 hours to erect it in place on our patio which included screwing it into concrete blocks we placed inside of planters.  You should note the interior height... it was too low for us as we wanted it higher for the hot tub.  We purchased 4 planters and used concrete blocks on which to set the pergola columns, then screwed the column's footers into the blocks. Screwing into the concrete was the hardest part actually, not assembling this pergola.