Wallenda Siblings

Nik Wallenda has made history by becoming the first person to walk on a high wire directly over an active volcano.

Siblings from a famed circus family - the Flying Wallendas - walked a wire strung 25 stories over New York's Times Square Sunday, in a hair-raising balancing act performed across five city blocks.

Nik Wallenda and his sister Lijana plan to walk 1,300 feet across New York's busy Times Square on Sunday in a live television event that has been six years in the making.

Nik Wallenda has made history by becoming the first person to walk on a high wire directly over an active volcano.

Siblings from a famed circus family - the Flying Wallendas - walked a wire strung 25 stories over New York's Times Square Sunday, in a hair-raising balancing act performed across five city blocks.

Nik Wallenda and his sister Lijana plan to walk 1,300 feet across New York's busy Times Square on Sunday in a live television event that has been six years in the making.