Alweg is best remembered for their role in building the original Disneyland Monorail System at Disneyland, which opened in 1959, and the Seattle Center Monorail, which opened for the 1962 Century 21 Exposition. Both systems remain operational, with the Seattle Center Monorail still using the original Alweg trains which have traveled over one million miles. A third system, built in Turin for the Italia 61 exposition remained unused a few months after the exposition closed and was destroyed by a fire in the late 1970s, most probably set by vandals. The remnants of the system were scrapped in 1981, with the north station now being repurposed as an office building.