Banff Town is located in the center of Banff National Park, the first and oldest national park in Canada. Banff Avenue is the most prosperous place in Banff Town. The 19th century architectural style is preserved on both sides of the Avenue. Banff Hot Spring Castle Hotel, Banff's landmark building, is one of the largest resort and entertainment hotels in North America. The town's permanent population is less than 9,000, but it combines the natural beauty of the Rocky Mountains with the convenience of modernization, which attracts millions of backpackers every year.