1 calorie of heat is the amount needed to raise 1 gram of water 1 degree Centigrade. 1 calorie (cal) = 4.184 J. (The Calories in food ratings are actually kilocalories.) A BTU (British Thermal Unit) is the amount of heat necessary to raise one pound of water by 1 degree Farenheit (F). 1 British Thermal Unit (BTU) = 1055 J (The Mechanical Equivalent of Heat Relation) 1 BTU = 252 cal = 1.055 kJ.
San Antonio River Walk. A couple strolls along the River Walk. The San Antonio River Walk (also known as Paseo del RÃ­o or simply as the River Walk) is a network of walkways along the banks of the San Antonio River, one story beneath the streets of San Antonio, Texas, USA.
Stay in the Heart of San Antonio. This hotel is in downtown San Antonio, a 6 minute walk from the San Antonio Riverwalk. The hotel features an outdoor pool, gym and suites with flat-screen TVs. Embassy Suites San Antonio Riverwalk Downtown suites include an MP3 docking station. The suites include a kitchenette, dining area and living room.