Lonely Planet’s Top 5 Cities to Visit in 201501/29/2015January 29, 20151. Washington, D.C., USA | 2. El Chaltén, Argentina | 3. Milan, Italy | 4. Zermatt, Switzerland | 5. Valletta, Malta | Source: lonelyplanet.comhttps://p.dw.com/p/1ESsxImage: Reuters/ G. CameronAdvertisement