Some landmarks invite you in. This one makes you work for it—857 steps, eight bastions and centuries of power plays later, the Fortress of Palamidi still believes history should be earned the hard way. Rising 216 metres above the city of Nafplio in Greece, this Venetian-built stronghold dates to 1714. Each bastion of this impressive fortification is designed as an independent unit so that if one fell, the others could still be defended. The Ottomans captured the fortress a year after completion, and Greece reclaimed it in 1822, renaming the bastions after heroes like Achilles and Leonidas. Today, visitors often test themselves on the fortress"s famous staircase—once believed to have 999 steps, though the actual count is 857. At the top, sweeping views of the Argolic Gulf make every step worthwhile.