Tourists visit the Beer Can House in Houston, the United States, April 20, 2013,. The Beer Can House was made by retired railway worker John Milkovisch from 1968 to 1988 with more than 50,000 beer cans and bottles. (Xinhua/Song Qiong)

A tourist visits the Beer Can House in Houston, the United States, April 20, 2013. The Beer Can House was made by retired railway worker John Milkovisch from 1968 to 1988 with more than 50,000 beer cans and bottles. (Xinhua/Song Qiong)