Rivers

Some 46,000 years ago, a volcanic eruption led to a flooding event that carved this short canyon with steep vertical walls.

The predecessor to this bridge was depicted in a famous Japanese woodcut print that influenced Van Gogh.

Take a ferry across the Paraíba river in one of these 1980s bus-turned-boats.

One of London's lost rivers runs through a pipe over the tracks of this subway station.

This whimsical statue marks the high water level from the Great Flood of 1993.

This historic suspension bridge is one of three remaining swinging bridges in Michigan, and one of the few swinging bridges left in North America.

Lines on the pillar of Heidelberg's Karl-Theodor Bridge record the dramatic heights of past floods.

These medieval wooden bridge pillars appeared out of nowhere in the aftermath of a huge earthquake.

These natural hot springs form four-tiered soaking pools with temperatures ranging from 85 to 115 degrees Fahrenheit.

This river ramp was once used by the elephants of a local circus.

The "Grand Canyon of Southwestern Idaho" makes a spectacular gash across the flat Snake River plain.

The world’s oldest boat lift is also known in the United Kingdom as the "Cathedral of the Canals" and one of the "Seven Wonders of the Waterways."