 Since 1904, the city has been home to the American Power Boat Association Gold Cup unlimited hydroplane boat race, held annually on the Detroit River near Belle Isle.Since 1916, the city has been home to Unlimited Hydroplane racing, held annually (with exceptions) on the Detroit River near Belle Isle.Often, the hydroplane boat race is for the APBA Challenge Cup, more commonly known as the Gold Cup (first awarded in 1904, created by Tiffany) which is the oldest active motorsport trophy in the world.