Are there any restrictions for children at Madame Tussauds Washington DC.? Madame Tussauds Washington DC. is suitable for all ages. Related articles How long does it take to go around Madame Tussauds? What items cannot be taken into Madame Tussauds? Do I have to pay for an under 3? How old must you be to enter the attraction unaccompanied? Can I change my booking?