The forecast predicts 90-degree highs throughout this week--meaning lunch is about finding the coolest seat and most refreshing eats possible. At the House of Commons, an English tea house in Lower Highland, the walls are painted in breezy whites and blues, lifting the day's heavy heat as soon as you take a seat. Order a lightly tart Royal Ascot iced tea and a Piccadilly sandwich. The cool tea blends sweet lemonade and crisp raspberry-rosehip tea--just the right mix to complement a sandwich of buttery Irish cheddar, English pickle relish, lettuce, tomato, and cucumber. 2401 15th St., 303-455-4832