The Metal models are amazingly detailed etched models that are fun and satisfying to assemble. Each model starts out as metal sheets and you simply pop out the pieces using wire cutters and follow the included directions to assemble your model. No glue or solder needed. If you need tools, you can buy here: https://www.amazon.it/dp/B06Y2FY287 ICONX Notre-Dame de Paris also known as Notre-Dame Cathedral or simply Notre-Dame, is a historic Catholic cathedral on the eastern half of the Île de la Cité in the fourth arrondissement of Paris, France. The cathedral is widely considered to be one of the finest examples of French Gothic architecture and among the largest and most well-known church buildings in the world. The naturalism of its sculptures and stained glass are in contrast with earlier Romanesque architecture. Item#:ICX003; Number of sheets:2 Sheets; Difficulty:Moderate; Assembled Size: 3.2″H x 4.6″ x 2″ (8.13 x 11.68 x 5.08 cm). ICONX TAJ MAHAL is a white marble mausoleum located in Agra, Uttar Pradesh, India. It was built by Mughal emperor Shah Jahan in memory of his third wife, Mumtaz Mahal. The Taj Mahal is widely recognized as “the jewel of Muslim art in India and one of the universally admired masterpieces of the world’s heritage”. Item#:ICX004; Number of sheets:2 Sheets; Difficulty:Moderate; Assembled Size: 2.5″H x 3.5″ x 3.5″ (6.35 x 8.89 x 8.89 cm).