The Omega Museum on Nicolas-Hayek-Strasse (named after the Swatch Group founder) traces the full history of the company from its 19th-century origins through the iconic Speedmaster selected by NASA for the Apollo missions to the current collections. The collection includes rare historical pieces, prototype watches, and the full line of current production. Admission is free, which makes it an easy half-hour stop.
Biel is the headquarters not only of Omega but also of Swatch, and the company's influence on the city's architecture and economy is visible everywhere. The Omega headquarters building next to the museum is the largest industrial building in Switzerland and is striking in its own right. If you have particular interest in watchmaking, the associated Omega-Atelier tour gives a closer look at the manufacturing process — these need to be booked in advance through the Omega website.