One of this energetic city’s most beloved hotels, Mandarin Oriental Barcelona can be found within a former bank on the famous Passeig de Gracia (be sure to visit the Bankers’ Bar: It evokes the feel of an old-timey gentlemen’s club and has excellent cocktails). The interiors are grand yet contemporary and designed by Patricia Urquiola. Since the Penthouse occupies the entire top floor of the hotel, the views of the city are brilliant — take them in from one of the two terraces. The 2,540-sq-ft, two-bedroom suite is more akin to a chic city apartment than a hotel suite. Host a dinner party in the dining area with space for eight guests, and watch the sunset over the Passeig de Gracia. For a fabulous way to see Gaudi’s city, head on a five-hour ‘Barcelona 360 degree’ tour. An architect or historian will accompany you as you are chauffeured in a luxury car to visit Sagrada Familia and Park Guell, then board a helicopter to see the city from above.