Lost Wonders is a fan-created expansion for 7 Wonders. This expansion adds a number of new boards and abilities to enhance and expand the game play of 7 Wonders, 7 Wonders: Leaders, and 7 Wonders: Cities.

Ancient Wonders
Angkor Wat
Beiping
Chichén Itzá
Ithákê
Lhasa
Rapa Nui
Yamato

Venerable Wonders
Antiócheia
Capua
Helvetia
Persepolis
Sparta
Venezia

Game Lover's Wonders
Caylus
Citadels
Dominion
Roll Through the Ages

Mythical Wonders
Atlantis
Babel
Brigadoon
El Dorado
R'Lyeh
Tártaros
Uruk

Mysterious Wonders
Doppelwönder
Temporal Paradox
Nomades

This expansion was created and tested by shima san, falantrius, and wizcreations.
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There also is a sequel to this expansion simply called Lost Wonders 2.

Lost Wonders 2
Cottliure
Nibbur
Êlysion Pedíon
Springfield
King's Landing
Pompeii
Éphyra
Trojan Horse
Myst
Machu Picchu

Re-implements:

Saint Petersburg: New Society & Banquet Expansion