Based on the clue 'built on aztec ruins with pyramid temple pieces t...', what is the answer?

What is associated with: built in the 3rd century bc by ptolemy i it contained over 500000 manuscripts? What is associated with: built in the early 1700s it was originally the chapel of the mission san antonio de valero? Based on the clue 'built on 14 islands this capital of sweden is one ...', what is the answer? Based on the clue 'built on 200 acres this washington dc train statio...', what is the answer? What is associated with: built on landfill the citys marina district was one of those hardest hit by this 1989 event? Based on the clue 'built on the latin for peer this word means to bel...', what is the answer? Based on the clue 'built on the site of the aztecs capital it later s...', what is the answer? What is associated with: built over 2000 years ago still in use it was the main way to get from rome to greece?