Balcony Pergola Ideas . A pergola can take form of a green space if. Modern pergola design ideas 1. 55 Fantastic Pergola Patio Design Ideas (33) Ideaboz from ideaboz.com In the picture above solid wood posts and beams make up the main structure of this pergola, complementing the wood. Decorating your pergola with ornamental lighting is a great idea, especially if you plan to organize dinner outside. Create a leafy wall by adding a trellis on one side.