Designs for the proposed Mersey Observatory near Crosby beach have gone on display across the region to allow the public to meet the judging panel and comment on the designs.
The £11.6m observatory, which will be at least 30m high with a viewing platform for around 200 people, a café and educational facilities will replace the existing radar tower when it is demolished in the summer.
Architects Duggan Morris, Farrel & Clark, Ellis Williams, Studio 8, and Phos were shortlisted in December and have since been developing more detailed proposals.
The designs range from a wedge-shaped building extending out over the river to a tower shaped like a table lamp.
Others include a V-shaped structure with a suspended viewing pod cantilevered out over the Mersey, and a weathered steel tower topped by a transparent viewing platform inspired by a lighthouse, and a structure that sees high 'piers' extended over the river.
The plans will be on display at Crosby library, Liverpool Renew Rooms on Wood Street, and Seacombe ferry terminal, from today until 28 February.