We moved down to Lake Havasu City to spend a week checking out the area. We had a beautiful day that actually had a calm wind (unusual in this area) so we decided to go for a hike. We went to Sara Park on the south side of the city and went for a 5 mile hike that went across BLM land all the way to the lake. It was a great hike.
Link to London Bridge info: http://www.golakehavasu.com/activities/more_to_do/london_bridge.aspx