Cutty Sark
Days of Operation: Daily from 10am until 5pm (last entry is at 4:15pm)
Address: King William Walk, Greenwich, London, SE10 9HT

Royal Observatory
Days of Operation: Daily from 10am until 5pm (last entry is at 4:30pm)
Address: Blackheath Avenue, Greenwich, London SE10 8XJ
Once booked, the purchase is non-refundable.