Top 8 memories inside the Astrodome -- the 8th Wonder of the World

HOUSTON (KTRK) -- On January 31, 1961, Harris County voters approved a general bond issue of $22 million to build the Astrodome.

About a year later, ground was broken for the new stadium. Voters had to dip into their pockets one more time and approve another $9 million in bonds to complete the project.

Some great moments in the Astrodome

The total price tag for the dome was $20 million, but the overall project, including streets, bridges and storms sewers was $40 million.

Here's a short clip of film produced by the Houston Sports Association about construction of the Harris County Domed Stadium.

PHOTOS: 50th anniversary of Astrodome

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Happy birthday to the Eighth Wonder of the World! On Thursday, April 9, 2015, the Houston Astrodome turned 50 and these are photos from the birthday celebration!

David Mackey/ABC-13