It's an amazing place and well worth the walk around.
The entry fee gets you in and you pay extra to go the Armoury and Treasury sections but well worth it. Free is the view of the Bosphorus from the rear battlements of the palace. Along with the mosques, the spice market and the grand bazaar, Topkapi is a must see in Istanbul . I was amazed!
close to Sirkeet railway station
and a short walk away from the Grand Bazaar, St Sophia, Sultanahmet mosque
and the Hippodrome
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