Aircraft, vehicles, cutting-edge technology, historic machinery, and even a mine fill this monumental building on an island in the Isar River, which comprises one of the best science and technology museums in the world. The collection is spread out over some 500,000 square feet, with eight floors of exhibits. The Centre for New Technologies includes interactive exhibitions, such as nanotechnology, biotechnology, and robotics. Children have their own "kingdom," the Kinderreich, where they can learn about modern technology and science through numerous interactive displays (parents must accompany their children). One of the most technically advanced planetariums in Europe has two shows daily, at 10 am and 2 pm, in German only. The Internet café on the third floor is open daily from 10 to 4, other cafés until 4:15. To arrange for a two-hour tour in English, book your tour in writing at least six weeks in advance. The Verkehrszentrum (Center for Transportation), on the former trade-fair grounds at the Theresienhöhe, has been completely renovated and houses an amazing collection of the museum's transportation exhibits. The museum's Flugwerft Schleissheim airfield is in Oberschleissheim, north of Munich.