linguistic:translation, structural:summarization
Livability

Pittsburgh has five city parks and several parks managed by the Nature Conservancy. The largest, Frick Park, provides 664 acres (269 ha) of woodland park with extensive hiking and biking trails throughout steep valleys and wooded slopes. Birding enthusiasts visit the Clayton Hill area of Frick Park, where over 100 species of birds have been recorded.

Residents living in extremely low-lying areas near the rivers or one of the 1,400 creeks and streams may have occasional floods, such as those caused when the remnants of Hurricane Ivan hit rainfall records in 2004. River flooding is relatively rare due to federal flood control efforts extensively managing locks, dams, and reservoirs. Residents living near smaller tributary streams are less protected from occasional flooding. The cost of a comprehensive flood control program for the region has been estimated at a prohibitive $50 billion.

Pittsburgh has the greatest number of bars per capita in the nation.