Based on the clue 'built in the 19th century the flying horse carouse...', what is the answer?

What is associated with: built in boston in the 1740s by the merchant for whom its named its still used as a market mee… Based on the clue 'built in celebration of military victories its the...', what is the answer? What is associated with: built in memory of a victim of this tragedy harvards widener library was opened in 1915? Based on the clue 'built in the 16th century the czar puchka is the w...', what is the answer? Based on the clue 'built in the 3rd century bc standing over 350 fee...', 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?