This breathtaking building looks like its straight out of a Harry Potter movie. Five tiers of ornamental cast-iron balconies give way to a gorgeous 61-foot skylight, shining the sun on stacks and stacks of old, beautiful books. The library opened in 1878, was designed by Baltimore architect Edmund G. Lind, and has 300,000+ books from the 19th century. The library is free, open to the public, and photos are allowed- you’ll definitely want to snag a few for the gram.