The scandals of a hotel and the man behind the 1908 London Olympics were two of the topics discussed on tourist walks along the river in Maidenhead this week.
Groups were led past the former Skindles Hotel, which became notorious as a venue for cheating couples and was once trashed by the Rolling Stones.
Tour manager Roger Askew said: "There were people saying 'I have lived here for 15 years and I never knew that'."
The walks, which start from the Thames Riviera Hotel, in Bridge Road, run from 2pm and 4pm until Saturday.
They have been organised by Windsor Welcome Blue Badge Tourist Guides to coincide with the rowing at Dorney Lake.
Contact 07947 600803 for information.
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The Met Office has issued a yellow alert for Windsor and Maidenhead, Slough and Wokingham, warning that rain moving eastwards across the south of the country may turn to snow in some places.