According to the the National Geographic Traveler magazine, route 2 in Amsterdam is one of the most beautiful in the world. Amsterdam shares company with cities like New Orleans, Budapest and Berlin when it comes to beautiful tram routes.
Go for a ride sometime on tram 2. The first part of the route from Central Station to the Hoofddorpplein takes you along plenty of sights worth seeing, such as, the Vondelpark, the canals, the Rijksmuseum, and the Stedelijk and Van Gogh museums. An illustrative map is shown below.
With a day ticket to disembark where you want and spend the entire day enjoying the sights, including those on other pleasant routes.