The Bartolotti is perhaps one of the most beautiful Museum Houses Amsterdam has, built by someone who once was the richest man in the city, but it's a bit hidden in plain sight. These days, it is run by a group of lovely old ladies, who can't wait to offer you tea or juice. You can walk around the house like you live there.
You have to ring the doorbell to get in.
(picture from Google, by Arjan Bronkhorst)
Under the city, the extraordinary Gesamtkunstwerk by Louis van Gasteren, Jan Sierhuis and others is located in Nieuwmarkt underground. This is one of the public artworks of the Seventies and early Eighties endangered due to station renovation on the Underground Eastline. At present there is a notice hanging at different spots on the wall: ‘‘This artwork has been temporally removed due to renovations”.
This place has the best handpicked natural wines and great, great food. Lovely, friendly and helpful staff. You can easily sit here for hours, have a bite once in a while and try great wines. An absolute must to visit.