A huge Celtic knot and a giant postcard welcoming visitors to Wales are just two of the design ideas for iconic sculptures which have been unveiled.
The 15 ideas from artists are revealed on a shortlist of landmarks for three major Welsh gateways.
Exhibitions of the designs for Holyhead harbour, the second Severn crossing and Flintshire will now tour Wales as part of a consultation exercise.
Organisers want the public to help choose the three final designs.
It is hoped the Big Lottery Fund will give the Landmark Wales project £18m to fund the construction of the designs.
Architects, artists and engineers from all over the world submitted proposals before five concepts for each location were chosen.
The successful candidates chosen from more than 100 entries were then given £5,000 each to develop their concepts to mark entry points to Wales with ambitious designs.
Wings for the Earth is designed for a site off the A550 in Flintshire
If funding is agreed, it is hoped the completed designs could become as iconic as The Angel of the North in Gateshead or the London Eye.
A selection panel including representatives from the arts, heritage and cultural sectors, has been put together to make the final decisions.
Project manager Geoff Wood said the panel would take into account comments and opinions expressed by the public and other interested groups.
Peter Cole of Capital Region Tourism said if their bid was successful, the Landmark Wales project would create "iconic cultural and artistic landmarks around Wales of a diversity and scale unlike anything in existence".
"Each of the candidate structures has the potential to be architecturally imposing, thought-provoking and will undoubtedly bring tangible benefits to the surrounding areas as other landmarks have done before them."
A further design competition, which was open to the public as well as professionals, was organised by Landmark Wales to create a series of landmarks in locations all over Wales, including Monmouthshire and Chirk.
The finalists, chosen from 87 entries, will be revealed soon and a further series of local events will showcase these concepts.
Members of the public can view the 15 designs on
or in person on 13-14 April - Old Library, Cardiff; 16-17 April - National Waterfront Museum, Swansea; 19-20 April - Venue Centre, Llandudno; 24-25 April Great Hall Foyer, Aberystwyth Arts Centre