Filled with Tiffany lamps, towering columns, and marble-topped tables. this art nouveau hangout has charm to spare. While you may have to wait in a line outside, depending on the time of day, it'll be worth it to knock back an espresso or sip a submarino, the local version of hot chocolate. Nibble on one of the dozens of different sandwiches or fork in one of the exquisite pastries and contemplate that you may well be sitting in the same seat that a former president, a renowned tango singer, or a world-famous artist or writer occupied many a time before. It's a place and time out of the past, and thankfully well preserved. Reservations are a must during the dinner-hour tango show.