Is it the gate to an amusement park? No, it is just the Albert Bridge, crossing from Battersea Park to Chelsea. Only the British would find a practical reason to paint a bridge pink, blue, and green and decorate it with thousands of lightbulbs. Apparently this makes it more visible to ships in bad weather. And only the British would keep a bridge that was quickly useless as a toll bridge, ill constructed to hold motor traffic, and generally rotting away only a decade after its grand opening. They fondly named it the Trembling Lady and issued strict orders that all troops must break step when marching across.
And fortunately, only the British would choose to renovate the bridge after its first 100+ difficult years, giving it a new coat of pink, blue, green, and gold, and even replacing the lightbulbs. The Albert Bridge goes on into its second century revamped and fit for a prince.