The capital of Portugal gets approximately 220 days of bright sunlight every year, which is impressive on its own but not enough to get the city its famous title. As you know, this incredible destination is also set on the beautiful Tagus River, reflecting an enormous amount of sunlight over the city like a big mirror. Plus, Lisbon’s architects favored such materials as white limestone and Portuguese lioz limestone, perfect for reflecting and scattering the light even further. As a result, the city seems to be almost constantly glowing.