The fort , which was taken by Lord Cornwallis and Colonel Arthur Wellesley ( the Iron Duke with the rubber boots ) , no longer stands today , but the sultan 's summer palace , Darya Daulat Bagh , has been preserved and made into a museum honoring the brave resistance of Tipu and his father , Haidar Ali .
The fort fell into disrepair and finally vanished altogether because of the lack of preservation efforts .