This is the Great Hypostyle Hall of Karnak Temple. It consists of 134 columns in an area of over 50,000 square feet. Most of the columns are 50 feet tall, but two rows of 6 columns flanking the central aisle are 80 feet tall and 30 feet in circumference. (!)
The hall was built around the 13th century BCE, an addition to the existing temple. Originally, a roof covered the hall, but it is long since open to the sky. (In architectural terms, a hypostyle indicates a space covered by a roof supported by columns.)
Can you name that country?
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