Some Denver streets have bicycle lanes, leaving a patchwork of disjointed routes throughout the city. There are over 850 miles of paved, off-road, bike paths in Denver parks and along bodies of water, like Cherry Creek and the South Platte. This allows for a significant portion of Denver's population to be bicycle commuters and has led to Denver being known as a bicycle-friendly city. Some residents are very opposed to bike lanes, which have caused some plans to be watered down or nixed. The review process for one bike line on Broadway will last over a year before city council members will make a decision. In addition to the many bike paths, Denver launched B-Cycle – a citywide bicycle sharing program – in late April 2010. The B-Cycle network was the largest in the United States at the time of its launch, boasting 400 bicycles.
State Highway 470 (C-470, SH 470) is the southwestern portion of the Denver metro area's beltway. Originally planned as Interstate 470 in the 1960s, the beltway project was attacked on environmental impact grounds and the interstate beltway was never built. The portion of "Interstate 470" built as a state highway is the present-day SH 470, which is a freeway for its entire length.
There is also an older downtown grid system that was designed to be parallel to the confluence of the South Platte River and Cherry Creek. Most of the streets downtown and in LoDo run northeast–southwest and northwest–southeast. This system has an unplanned benefit for snow removal; if the streets were in a normal N–S/E–W grid, only the N–S streets would receive sunlight. With the grid oriented to the diagonal directions, the NW–SE streets receive sunlight to melt snow in the morning and the NE–SW streets receive it in the afternoon. This idea was from Henry Brown the founder of the Brown Palace Hotel. There is now a plaque across the street from the Brown Palace Hotel that honors this idea. The NW–SE streets are numbered, while the NE–SW streets are named. The named streets start at the intersection of Colfax Avenue and Broadway with the block-long Cheyenne Place. The numbered streets start underneath the Colfax and I-25 viaducts. There are 27 named and 44 numbered streets on this grid. There are also a few vestiges of the old grid system in the normal grid, such as Park Avenue, Morrison Road, and Speer Boulevard. Larimer Street, named after William Larimer, Jr., the founder of Denver, which is in the heart of LoDo, is the oldest street in Denver.
10. Silverthorne Ice Castles: These castles are like Disney’s ‘Frozen’ in the real world. Local artist Brent Christensen makes thousands of tons of ice into sculptures every year using icicles and sprinklers. The water freezes over the icicles creating towers, spires, walls, tunnels and cascades. In sunlight, the towers glow turquoise. By night, the ice glows from a hundred little lights placed in the ice structures.
Denver is in the center of the Front Range Urban Corridor, between the Rocky Mountains to the west and the High Plains to the east. Denver's topography consists of plains in the city center with hilly areas to the north, west and south. According to the United States Census Bureau the city has a total area of 155 square miles (401 km2), of which 153 square miles (396 km2) is land and 1.6 square miles (4.1 km2) (1.1%) is water. The City and County of Denver is surrounded by only three other counties: Adams County to the north and east, Arapahoe County to the south and east, and Jefferson County to the west.