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Feel free to contact us if you have questions on specific height figures or rankings published by us.

Phone Number

  • To speak to us personally, please call: +1-312-451-7577

Working Hours

  • Monday - Friday 10am to 6pm

Submit Information

  • If you would like to submit updates to already listed buildings or buildings which are missing, please send an email to us including

    - your contact details
    - figures confirming your updates
    - attachments such as PDF files

    Please also provide a phone number in case our staff might want to call you back.

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