The hike takes about 1 hr, and on a mist-less day (e.g. during wet season when the air is cleaned by the rain) you can easily spot Bagan. About 1 km before the peak, you will hit a small temple with pagoda. Take enough water and sunscreen for the top.
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To reach the top of the shrine, you must remove shoes and socks and climb the 777 steps to the summit. Take great care during the rainy season as the steps can be very slippery. Along the way are a multitudes of monkeys expecting treats. Sometimes they can get a little aggressive (supposedly, the monkeys like to go after people's glasses) so it is recommended that you keep a tight grip on your possessions. And because of the monkeys, the ground is filthy. People clean it along the way and ask for a donation, but there are plenty of places they don't clean. It's wise to bring baby wipes or tissues to clean your feet when you leave because they will be dirty.