Hadrian’s Gate was built in 117 AD, the same year the neighboring Library of Celsus was finished. The three-level marble monument was originally an impressive 54.5 feet tall and 37.4 feet wide. Construction began while Trajan was Roman emperor (98 – 117) then dedicated to his successor Hadrian. The emperor visited Ephesus three times during his reign (117 to 138) in 124, 129 and 131. These fluted Corinthian and Ionic columns supporting architrave fragments were uncovered in 1904 and raised in the mid-1980s. You have to imagine the grand arch that previously occupied the middle.